Lončar, Ljiljana

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  • Lončar, Ljiljana (23)
Projects

Author's Bibliography

Poboljšanje svojstava prefabrikovanih betonskih elemenata primenom SIKA AER SOLID

Stojanović, Marko; Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana; Antić Aranđelović, Lana

(2022)


                                            

                                            
Stojanović, M., Janković, K., Bojović, D., Lončar, L.,& Antić Aranđelović, L.. (2022). Poboljšanje svojstava prefabrikovanih betonskih elemenata primenom SIKA AER SOLID. .
https://hdl.handle.net/21.15107/rcub_rims_553
Stojanović M, Janković K, Bojović D, Lončar L, Antić Aranđelović L. Poboljšanje svojstava prefabrikovanih betonskih elemenata primenom SIKA AER SOLID. 2022;.
https://hdl.handle.net/21.15107/rcub_rims_553 .
Stojanović, Marko, Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, Antić Aranđelović, Lana, "Poboljšanje svojstava prefabrikovanih betonskih elemenata primenom SIKA AER SOLID" (2022),
https://hdl.handle.net/21.15107/rcub_rims_553 .

Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete

Stojanović, Marko; Janković, Ksenija; Bojović, Dragan; Antić Aranđelović, Lana; Lončar, Ljiljana

(2022)

TY  - CONF
AU  - Stojanović, Marko
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Antić Aranđelović, Lana
AU  - Lončar, Ljiljana
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/556
AB  - Concrete in which the air entraining admixture was used can exhibit behavior which alternate from the ‘standard’ concrete behavior when employed in the structural design. The origin of this problem can be found in the changeable properties of the componential materials, incompatibility of the utilized raw materials, influence of extreme conditions on the concrete curing (i.e., increased temperature), etc. The possibility of using other additives for the concrete exposed to various environmental influences was investigated. Sustainability of concrete production and resource efficiency urged the searching for an adequate waste material or an industrial byproduct which would improve freezing/thawing resistance of concrete. In this paper the possibility of Sika Aer Solid powdery additive and recycled rubber as a substitute for the air entraining admixture was investigated. Four mixtures were designed: referent concrete with no air entraining admixtures, concrete with Sika Aer Solid, concrete with recycled rubber, and concrete with air entraining admixture. The properties of fresh and hardened concrete were examined. The obtained results of compressive strength, resistance to freezing/thawing cycles and depth of water penetration under pressure for altered concretes indicate that it is possible to use alternative additives as substitutes for air entraining admixture.
C3  - Serbian Ceramic Society Conference - Advanced Ceramics and Applications X: New Frontiers in Multifunctional Material Science and Processing, Book of Abstracts
T1  - Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete
UR  - https://hdl.handle.net/21.15107/rcub_rims_556
ER  - 
@conference{
author = "Stojanović, Marko and Janković, Ksenija and Bojović, Dragan and Antić Aranđelović, Lana and Lončar, Ljiljana",
year = "2022",
abstract = "Concrete in which the air entraining admixture was used can exhibit behavior which alternate from the ‘standard’ concrete behavior when employed in the structural design. The origin of this problem can be found in the changeable properties of the componential materials, incompatibility of the utilized raw materials, influence of extreme conditions on the concrete curing (i.e., increased temperature), etc. The possibility of using other additives for the concrete exposed to various environmental influences was investigated. Sustainability of concrete production and resource efficiency urged the searching for an adequate waste material or an industrial byproduct which would improve freezing/thawing resistance of concrete. In this paper the possibility of Sika Aer Solid powdery additive and recycled rubber as a substitute for the air entraining admixture was investigated. Four mixtures were designed: referent concrete with no air entraining admixtures, concrete with Sika Aer Solid, concrete with recycled rubber, and concrete with air entraining admixture. The properties of fresh and hardened concrete were examined. The obtained results of compressive strength, resistance to freezing/thawing cycles and depth of water penetration under pressure for altered concretes indicate that it is possible to use alternative additives as substitutes for air entraining admixture.",
journal = "Serbian Ceramic Society Conference - Advanced Ceramics and Applications X: New Frontiers in Multifunctional Material Science and Processing, Book of Abstracts",
title = "Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete",
url = "https://hdl.handle.net/21.15107/rcub_rims_556"
}
Stojanović, M., Janković, K., Bojović, D., Antić Aranđelović, L.,& Lončar, L.. (2022). Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete. in Serbian Ceramic Society Conference - Advanced Ceramics and Applications X: New Frontiers in Multifunctional Material Science and Processing, Book of Abstracts.
https://hdl.handle.net/21.15107/rcub_rims_556
Stojanović M, Janković K, Bojović D, Antić Aranđelović L, Lončar L. Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete. in Serbian Ceramic Society Conference - Advanced Ceramics and Applications X: New Frontiers in Multifunctional Material Science and Processing, Book of Abstracts. 2022;.
https://hdl.handle.net/21.15107/rcub_rims_556 .
Stojanović, Marko, Janković, Ksenija, Bojović, Dragan, Antić Aranđelović, Lana, Lončar, Ljiljana, "Possibility of Using Other Additives as Replacement for Air Entraining Admixture in Concrete" in Serbian Ceramic Society Conference - Advanced Ceramics and Applications X: New Frontiers in Multifunctional Material Science and Processing, Book of Abstracts (2022),
https://hdl.handle.net/21.15107/rcub_rims_556 .

Influence of different types of fibers on flexural tensile strength

Stojanović, Marko; Antić Aranđelović, Lana; Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana

(2022)

TY  - CONF
AU  - Stojanović, Marko
AU  - Antić Aranđelović, Lana
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/507
AB  - The paper presents the influence of the application of different types of fibers in
concrete beams on the flexural tensile strength. All concrete beams were made of
the same component materials and composition, except for the amount of fiber,
which is varied. After hardening, the height of the concrete beams in the central
part was reduced to 125 mm by cutting. The measurement of flexural tensile
strength by was performed according to SRPS EN 14651. Based on the test
results, depending on the type, shape, quantity and distribution of fibers, the
values of ultimate and residual strengths were analyzed.
C3  - Proceedings of the ASES International Symposium, Aranđelovac, Serbia
T1  - Influence of different types of fibers on flexural tensile strength
EP  - 439
SP  - 439
UR  - https://hdl.handle.net/21.15107/rcub_rims_507
ER  - 
@conference{
author = "Stojanović, Marko and Antić Aranđelović, Lana and Janković, Ksenija and Bojović, Dragan and Lončar, Ljiljana",
year = "2022",
abstract = "The paper presents the influence of the application of different types of fibers in
concrete beams on the flexural tensile strength. All concrete beams were made of
the same component materials and composition, except for the amount of fiber,
which is varied. After hardening, the height of the concrete beams in the central
part was reduced to 125 mm by cutting. The measurement of flexural tensile
strength by was performed according to SRPS EN 14651. Based on the test
results, depending on the type, shape, quantity and distribution of fibers, the
values of ultimate and residual strengths were analyzed.",
journal = "Proceedings of the ASES International Symposium, Aranđelovac, Serbia",
title = "Influence of different types of fibers on flexural tensile strength",
pages = "439-439",
url = "https://hdl.handle.net/21.15107/rcub_rims_507"
}
Stojanović, M., Antić Aranđelović, L., Janković, K., Bojović, D.,& Lončar, L.. (2022). Influence of different types of fibers on flexural tensile strength. in Proceedings of the ASES International Symposium, Aranđelovac, Serbia, 439-439.
https://hdl.handle.net/21.15107/rcub_rims_507
Stojanović M, Antić Aranđelović L, Janković K, Bojović D, Lončar L. Influence of different types of fibers on flexural tensile strength. in Proceedings of the ASES International Symposium, Aranđelovac, Serbia. 2022;:439-439.
https://hdl.handle.net/21.15107/rcub_rims_507 .
Stojanović, Marko, Antić Aranđelović, Lana, Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, "Influence of different types of fibers on flexural tensile strength" in Proceedings of the ASES International Symposium, Aranđelovac, Serbia (2022):439-439,
https://hdl.handle.net/21.15107/rcub_rims_507 .

Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete

Stojanović, Marko; Janković, Ksenija; Bojović, Dragan; Antić Aranđelović, Lana; Lončar, Ljiljana

(2021)

TY  - CONF
AU  - Stojanović, Marko
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Antić Aranđelović, Lana
AU  - Lončar, Ljiljana
PY  - 2021
UR  - http://rims.institutims.rs/handle/123456789/650
AB  - The influence of the application of different types of fibres on the flexural strength of beams cut from slabs of
sprayed concrete is presented in the paper. Fibres of different materials, shapes and dimensions were used. All types of
concrete were made of the same component materials and composition, except the amount of fibres that is varied. Slabs
of dimensions 60x60x10 cm were made using a concrete spraying machine. After curing, the beams of 75x125x500 mm
were cut from the beams. Flexural strength of the beams was tested according to SRPS EN 14488-3 at the age of 28
days. Based on the test results, depending on the type, shape, amount and distribution of fibres, values of ultimate and
residual strengths were analysed. The highest values of ultimate and residual strength at deformations of 0.5-1, 0.5-2 and
0.5-4 mm had sprayed concrete (or shotcrete) with the addition of 40 mm polypropylene fibres.
C3  - Proceedings of the 2nd International Conference CoMS 2020/21
T1  - Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete
UR  - https://hdl.handle.net/21.15107/rcub_rims_650
ER  - 
@conference{
author = "Stojanović, Marko and Janković, Ksenija and Bojović, Dragan and Antić Aranđelović, Lana and Lončar, Ljiljana",
year = "2021",
abstract = "The influence of the application of different types of fibres on the flexural strength of beams cut from slabs of
sprayed concrete is presented in the paper. Fibres of different materials, shapes and dimensions were used. All types of
concrete were made of the same component materials and composition, except the amount of fibres that is varied. Slabs
of dimensions 60x60x10 cm were made using a concrete spraying machine. After curing, the beams of 75x125x500 mm
were cut from the beams. Flexural strength of the beams was tested according to SRPS EN 14488-3 at the age of 28
days. Based on the test results, depending on the type, shape, amount and distribution of fibres, values of ultimate and
residual strengths were analysed. The highest values of ultimate and residual strength at deformations of 0.5-1, 0.5-2 and
0.5-4 mm had sprayed concrete (or shotcrete) with the addition of 40 mm polypropylene fibres.",
journal = "Proceedings of the 2nd International Conference CoMS 2020/21",
title = "Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete",
url = "https://hdl.handle.net/21.15107/rcub_rims_650"
}
Stojanović, M., Janković, K., Bojović, D., Antić Aranđelović, L.,& Lončar, L.. (2021). Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete. in Proceedings of the 2nd International Conference CoMS 2020/21.
https://hdl.handle.net/21.15107/rcub_rims_650
Stojanović M, Janković K, Bojović D, Antić Aranđelović L, Lončar L. Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete. in Proceedings of the 2nd International Conference CoMS 2020/21. 2021;.
https://hdl.handle.net/21.15107/rcub_rims_650 .
Stojanović, Marko, Janković, Ksenija, Bojović, Dragan, Antić Aranđelović, Lana, Lončar, Ljiljana, "Influence of different types of fibers on the ultimate and residual flexural strength of sprayed concrete" in Proceedings of the 2nd International Conference CoMS 2020/21 (2021),
https://hdl.handle.net/21.15107/rcub_rims_650 .

Possibility of using bottom ash in precast concrete products

Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana; Stojanović, Marko; Antić Aranđelović, Lana

(Croatian Soc Civil Engineers-Hsgi, Zagreb, 2018)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
AU  - Stojanović, Marko
AU  - Antić Aranđelović, Lana
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/330
AB  - Chemical, physical and mechanical properties of bottom ash from two thermal power plants were analysed in order to evaluate the quality of bottom ash and to determine the possibility of its use in composite materials. It was found that the bottom ash samples from both power plants show good properties enabling their practical use, and that they also meet most of the criteria specified for fly ash. Samples in which 4, 8, 12 and 16% of fine aggregate was replaced with bottom ash were tested. The results meet criteria of applicable regulations for concrete, which justifies the use of bottom ash in construction industry.
PB  - Croatian Soc Civil Engineers-Hsgi, Zagreb
T2  - Gradjevinar
T1  - Possibility of using bottom ash in precast concrete products
EP  - 419
IS  - 5
SP  - 413
VL  - 70
DO  - 10.14256/JCE.1589.2016
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Lončar, Ljiljana and Stojanović, Marko and Antić Aranđelović, Lana",
year = "2018",
abstract = "Chemical, physical and mechanical properties of bottom ash from two thermal power plants were analysed in order to evaluate the quality of bottom ash and to determine the possibility of its use in composite materials. It was found that the bottom ash samples from both power plants show good properties enabling their practical use, and that they also meet most of the criteria specified for fly ash. Samples in which 4, 8, 12 and 16% of fine aggregate was replaced with bottom ash were tested. The results meet criteria of applicable regulations for concrete, which justifies the use of bottom ash in construction industry.",
publisher = "Croatian Soc Civil Engineers-Hsgi, Zagreb",
journal = "Gradjevinar",
title = "Possibility of using bottom ash in precast concrete products",
pages = "419-413",
number = "5",
volume = "70",
doi = "10.14256/JCE.1589.2016"
}
Janković, K., Bojović, D., Lončar, L., Stojanović, M.,& Antić Aranđelović, L.. (2018). Possibility of using bottom ash in precast concrete products. in Gradjevinar
Croatian Soc Civil Engineers-Hsgi, Zagreb., 70(5), 413-419.
https://doi.org/10.14256/JCE.1589.2016
Janković K, Bojović D, Lončar L, Stojanović M, Antić Aranđelović L. Possibility of using bottom ash in precast concrete products. in Gradjevinar. 2018;70(5):413-419.
doi:10.14256/JCE.1589.2016 .
Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, Stojanović, Marko, Antić Aranđelović, Lana, "Possibility of using bottom ash in precast concrete products" in Gradjevinar, 70, no. 5 (2018):413-419,
https://doi.org/10.14256/JCE.1589.2016 . .
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The influence of tailings and cement type on durability properties of self-compacting concrete

Janković, Ksenija; Šušić, Nenad; Stojanović, Marko; Bojović, Dragan; Lončar, Ljiljana

(Univ Osijek, Tech Fac, Slavonski Brod, 2017)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Šušić, Nenad
AU  - Stojanović, Marko
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
PY  - 2017
UR  - http://rims.institutims.rs/handle/123456789/325
AB  - In order to examine the differences in chemical composition and the possibility of using mine tailings in mortar and concrete production, samples were taken from the landfill and directly from the production. Tailings test results showed no pozzolanic activity and that its application in concrete can be only a partial replacement of aggregate. This paper presents the possibility of using tailings in self-compacting concrete made with Portland cement and sulphate resistant cement. Concrete specimens in which the aggregate fraction 0/4 mm was replaced with 10 and 20 % of tailings were examined. The resistance to freezing and thawing with and without de-icing salts is used as an indicator of concrete durability.
PB  - Univ Osijek, Tech Fac, Slavonski Brod
T2  - Tehnicki Vjesnik-Technical Gazette
T1  - The influence of tailings and cement type on durability properties of self-compacting concrete
EP  - 962
IS  - 3
SP  - 957
VL  - 24
DO  - 10.17559/TV-20160304113800
ER  - 
@article{
author = "Janković, Ksenija and Šušić, Nenad and Stojanović, Marko and Bojović, Dragan and Lončar, Ljiljana",
year = "2017",
abstract = "In order to examine the differences in chemical composition and the possibility of using mine tailings in mortar and concrete production, samples were taken from the landfill and directly from the production. Tailings test results showed no pozzolanic activity and that its application in concrete can be only a partial replacement of aggregate. This paper presents the possibility of using tailings in self-compacting concrete made with Portland cement and sulphate resistant cement. Concrete specimens in which the aggregate fraction 0/4 mm was replaced with 10 and 20 % of tailings were examined. The resistance to freezing and thawing with and without de-icing salts is used as an indicator of concrete durability.",
publisher = "Univ Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnicki Vjesnik-Technical Gazette",
title = "The influence of tailings and cement type on durability properties of self-compacting concrete",
pages = "962-957",
number = "3",
volume = "24",
doi = "10.17559/TV-20160304113800"
}
Janković, K., Šušić, N., Stojanović, M., Bojović, D.,& Lončar, L.. (2017). The influence of tailings and cement type on durability properties of self-compacting concrete. in Tehnicki Vjesnik-Technical Gazette
Univ Osijek, Tech Fac, Slavonski Brod., 24(3), 957-962.
https://doi.org/10.17559/TV-20160304113800
Janković K, Šušić N, Stojanović M, Bojović D, Lončar L. The influence of tailings and cement type on durability properties of self-compacting concrete. in Tehnicki Vjesnik-Technical Gazette. 2017;24(3):957-962.
doi:10.17559/TV-20160304113800 .
Janković, Ksenija, Šušić, Nenad, Stojanović, Marko, Bojović, Dragan, Lončar, Ljiljana, "The influence of tailings and cement type on durability properties of self-compacting concrete" in Tehnicki Vjesnik-Technical Gazette, 24, no. 3 (2017):957-962,
https://doi.org/10.17559/TV-20160304113800 . .
10
5
11

Durability of concrete with different types of cement

Janković, Ksenija; Lončar, Ljiljana; Bojović, Dragan; Stojanović, Marko

(Procema SA, 2016)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Lončar, Ljiljana
AU  - Bojović, Dragan
AU  - Stojanović, Marko
PY  - 2016
UR  - http://rims.institutims.rs/handle/123456789/299
AB  - Adequate measures must be taken during the determination of the concrete composition for ensuring the durability of concrete exposed to an aggressive environment. The influence of the cement type on the freeze/thaw resistance with and without de-icing salt of concrete was tested. Samples were made using five types of cement. All types of concrete made according to the recommendations of the Serbian and European norms had the required frost resistance. Besides the respected recommendations, concrete made using cement with 35% mineral additions of fly ash and lime was not freeze/thaw resistant with de-icing salt. Weathering resistance for paving units is determined according to EN 1338 and EN 1339 for freeze/thaw resistance with de-icing salt or water absorption. Taking into account previous investigations, only samples which were made in accordance with the recommendations of the Serbian Building code requirements for concrete and reinforced concrete - BAB 87 and European norms EN 206-1 were tested. Regarding water absorption, it is expected that in the case of established production all types of concrete would be integrated into class 2 according to EN. Also, for two representative types of concrete with different air content and degree of damage done by destructive test, non-destructive test by device RapidAir 457 was done (specific surface, spacing factor, void frequency and average chord length).
PB  - Procema SA
T2  - Revista Romana de Materiale/ Romanian Journal of Materials
T1  - Durability of concrete with different types of cement
EP  - 221
IS  - 2
SP  - 215
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_rims_299
ER  - 
@article{
author = "Janković, Ksenija and Lončar, Ljiljana and Bojović, Dragan and Stojanović, Marko",
year = "2016",
abstract = "Adequate measures must be taken during the determination of the concrete composition for ensuring the durability of concrete exposed to an aggressive environment. The influence of the cement type on the freeze/thaw resistance with and without de-icing salt of concrete was tested. Samples were made using five types of cement. All types of concrete made according to the recommendations of the Serbian and European norms had the required frost resistance. Besides the respected recommendations, concrete made using cement with 35% mineral additions of fly ash and lime was not freeze/thaw resistant with de-icing salt. Weathering resistance for paving units is determined according to EN 1338 and EN 1339 for freeze/thaw resistance with de-icing salt or water absorption. Taking into account previous investigations, only samples which were made in accordance with the recommendations of the Serbian Building code requirements for concrete and reinforced concrete - BAB 87 and European norms EN 206-1 were tested. Regarding water absorption, it is expected that in the case of established production all types of concrete would be integrated into class 2 according to EN. Also, for two representative types of concrete with different air content and degree of damage done by destructive test, non-destructive test by device RapidAir 457 was done (specific surface, spacing factor, void frequency and average chord length).",
publisher = "Procema SA",
journal = "Revista Romana de Materiale/ Romanian Journal of Materials",
title = "Durability of concrete with different types of cement",
pages = "221-215",
number = "2",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_rims_299"
}
Janković, K., Lončar, L., Bojović, D.,& Stojanović, M.. (2016). Durability of concrete with different types of cement. in Revista Romana de Materiale/ Romanian Journal of Materials
Procema SA., 46(2), 215-221.
https://hdl.handle.net/21.15107/rcub_rims_299
Janković K, Lončar L, Bojović D, Stojanović M. Durability of concrete with different types of cement. in Revista Romana de Materiale/ Romanian Journal of Materials. 2016;46(2):215-221.
https://hdl.handle.net/21.15107/rcub_rims_299 .
Janković, Ksenija, Lončar, Ljiljana, Bojović, Dragan, Stojanović, Marko, "Durability of concrete with different types of cement" in Revista Romana de Materiale/ Romanian Journal of Materials, 46, no. 2 (2016):215-221,
https://hdl.handle.net/21.15107/rcub_rims_299 .
1
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Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina

Janković, Ksenija; Bojović, Dragan; Stojanović, Marko; Lončar, Ljiljana

(Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd, 2014)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Stojanović, Marko
AU  - Lončar, Ljiljana
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/234
AB  - Cementni materijali u poljoprivrednim i drugim industrijskim objektima izloženi su dejstvu kiselina. Zbog toga vek konstrukcija zavisi od trajnosti maltera ili betonskih elemenata u agresivnoj sredini. U radu je predstavljena otpornost na koroziju koja je uzrokovana sulfatnom, nitratnom, ureom, mlečnom i sirćetnom kiselinom. Skenirajuća elektronska mikroskopija (SEM) korišćena je da se ispita efekat agresivnih rastvora na mikrostrukturu i mehaničke osobine maltera. Hemijska otpornost prizmi od maltera i dve vrste betona testirana je prema metodi Koch-Steinegger. Kako je uslov za otpornost na agresivne rastvore taj da zatezna čvrstoća maltera nije manja od 70% u odnosu na referentne prizme negovane u vodi, može se zaključiti da su malter i beton, napravljeni sa CEM III/B, u ovom istraživanju otporni na sve kiseline kojima su tretirani. .
AB  - Cement based materials in the agricultural and other industrial structures are exposed to acid attack. That is the reason why the service life of structure depends on the durability of mortar or concrete elements in aggressive environment. Resistance to corrosion caused by sulphate, nitrate, carbamide, lactic acid and acetic acid was presented. Optical and scanning electron microscopy (SEM) was used to examine the effect of aggressive solutions on the microstructure and mechanical properties of mortar. The chemical resistance of mortar prisms and two types of concrete were tested according to the Koch-Steinegger method. As the condition for resistance in aggressive solution is that flexural strength of mortar prisms is no less than 70 % compared to referent prisms cured in water it can be concluded that mortar and concrete made with CEM III/B in this investigation are resistant to all treated acids.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Građevinski materijali i konstrukcije
T1  - Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina
T1  - Resistance of CEM III/B based materials to acid attack
EP  - 37
IS  - 2
SP  - 29
VL  - 57
DO  - 10.5937/grmk1402029J
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Stojanović, Marko and Lončar, Ljiljana",
year = "2014",
abstract = "Cementni materijali u poljoprivrednim i drugim industrijskim objektima izloženi su dejstvu kiselina. Zbog toga vek konstrukcija zavisi od trajnosti maltera ili betonskih elemenata u agresivnoj sredini. U radu je predstavljena otpornost na koroziju koja je uzrokovana sulfatnom, nitratnom, ureom, mlečnom i sirćetnom kiselinom. Skenirajuća elektronska mikroskopija (SEM) korišćena je da se ispita efekat agresivnih rastvora na mikrostrukturu i mehaničke osobine maltera. Hemijska otpornost prizmi od maltera i dve vrste betona testirana je prema metodi Koch-Steinegger. Kako je uslov za otpornost na agresivne rastvore taj da zatezna čvrstoća maltera nije manja od 70% u odnosu na referentne prizme negovane u vodi, može se zaključiti da su malter i beton, napravljeni sa CEM III/B, u ovom istraživanju otporni na sve kiseline kojima su tretirani. ., Cement based materials in the agricultural and other industrial structures are exposed to acid attack. That is the reason why the service life of structure depends on the durability of mortar or concrete elements in aggressive environment. Resistance to corrosion caused by sulphate, nitrate, carbamide, lactic acid and acetic acid was presented. Optical and scanning electron microscopy (SEM) was used to examine the effect of aggressive solutions on the microstructure and mechanical properties of mortar. The chemical resistance of mortar prisms and two types of concrete were tested according to the Koch-Steinegger method. As the condition for resistance in aggressive solution is that flexural strength of mortar prisms is no less than 70 % compared to referent prisms cured in water it can be concluded that mortar and concrete made with CEM III/B in this investigation are resistant to all treated acids.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Građevinski materijali i konstrukcije",
title = "Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina, Resistance of CEM III/B based materials to acid attack",
pages = "37-29",
number = "2",
volume = "57",
doi = "10.5937/grmk1402029J"
}
Janković, K., Bojović, D., Stojanović, M.,& Lončar, L.. (2014). Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina. in Građevinski materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 57(2), 29-37.
https://doi.org/10.5937/grmk1402029J
Janković K, Bojović D, Stojanović M, Lončar L. Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina. in Građevinski materijali i konstrukcije. 2014;57(2):29-37.
doi:10.5937/grmk1402029J .
Janković, Ksenija, Bojović, Dragan, Stojanović, Marko, Lončar, Ljiljana, "Otpornost materijala na bazi metalurškog cementa na dejstvo kiselina" in Građevinski materijali i konstrukcije, 57, no. 2 (2014):29-37,
https://doi.org/10.5937/grmk1402029J . .

Changing the structure of concrete after exposure to frost

Bojović, Dragan; Janković, Ksenija; Stojanović, Marko; Lončar, Ljiljana

(Faculty Of Civil Engineering Subotica, 2014)

TY  - CONF
AU  - Bojović, Dragan
AU  - Janković, Ksenija
AU  - Stojanović, Marko
AU  - Lončar, Ljiljana
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/649
AB  - Concrete testing can be done at micro, mezzo and macro level. Tests at the macro level are the most common and are the ultimate engineering approach, and include testing and comparison of quantities such as commpresive strength, modulus of elasticiti and the like. In this manner you can determine changes in structures of concrete. To be considered during the examination and the file structure of concrete should be seen as concrete material composed of cement stone and aggregate, that is switch to a lower level of analysis – mezzo level. Concrete exposed to freezing changes its characteristics both in terms of strength and in terms of the structure. The aim of this study is to determine how to modify the structure of the concrete after frost action. Changing the structure of concrete was evaluated qualitative and quantitative analysis of pores using a device RapidAir 457.
PB  - Faculty Of Civil Engineering Subotica
C3  - JOURNAL OF FACULTY OF CIVIL ENGINEERING
T1  - Changing the structure of concrete after exposure to frost
EP  - 501
SP  - 497
DO  - 10.14415/konferencijaGFS2014.067
ER  - 
@conference{
author = "Bojović, Dragan and Janković, Ksenija and Stojanović, Marko and Lončar, Ljiljana",
year = "2014",
abstract = "Concrete testing can be done at micro, mezzo and macro level. Tests at the macro level are the most common and are the ultimate engineering approach, and include testing and comparison of quantities such as commpresive strength, modulus of elasticiti and the like. In this manner you can determine changes in structures of concrete. To be considered during the examination and the file structure of concrete should be seen as concrete material composed of cement stone and aggregate, that is switch to a lower level of analysis – mezzo level. Concrete exposed to freezing changes its characteristics both in terms of strength and in terms of the structure. The aim of this study is to determine how to modify the structure of the concrete after frost action. Changing the structure of concrete was evaluated qualitative and quantitative analysis of pores using a device RapidAir 457.",
publisher = "Faculty Of Civil Engineering Subotica",
journal = "JOURNAL OF FACULTY OF CIVIL ENGINEERING",
title = "Changing the structure of concrete after exposure to frost",
pages = "501-497",
doi = "10.14415/konferencijaGFS2014.067"
}
Bojović, D., Janković, K., Stojanović, M.,& Lončar, L.. (2014). Changing the structure of concrete after exposure to frost. in JOURNAL OF FACULTY OF CIVIL ENGINEERING
Faculty Of Civil Engineering Subotica., 497-501.
https://doi.org/10.14415/konferencijaGFS2014.067
Bojović D, Janković K, Stojanović M, Lončar L. Changing the structure of concrete after exposure to frost. in JOURNAL OF FACULTY OF CIVIL ENGINEERING. 2014;:497-501.
doi:10.14415/konferencijaGFS2014.067 .
Bojović, Dragan, Janković, Ksenija, Stojanović, Marko, Lončar, Ljiljana, "Changing the structure of concrete after exposure to frost" in JOURNAL OF FACULTY OF CIVIL ENGINEERING (2014):497-501,
https://doi.org/10.14415/konferencijaGFS2014.067 . .

Evaluation of air content on concrete compressive strength with classical approach and neural networks

Bojović, Dragan; Nikolić, Dragan; Janković, Ksenija; Lončar, Ljiljana

(Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd, 2012)

TY  - JOUR
AU  - Bojović, Dragan
AU  - Nikolić, Dragan
AU  - Janković, Ksenija
AU  - Lončar, Ljiljana
PY  - 2012
UR  - http://rims.institutims.rs/handle/123456789/156
AB  - Mnogi parametri utiču na karakteristike svežeg i očvrslog betona. Jedan od najvažnijih svakako jeste poroznost betona. Poroznost svežeg betona meri se količinom uvučenog vazduha. Uticaj uvučenog vazduha na beton i njegovu pritisnu čvrstoću istraživali su mnogi svetski istraživači. Na bazi tih istraživanja, izdvojene su dve, u praksi najviše korišćene, formule. Tehnike mekog programiranja, a posebno neuronske mreže, s formiranim bazama podataka laboratorijskih ispitivanja betona, otvaraju novi pristup u predviđanju uticaja količine uvučenog vazduha u svežem betonu na njegovu čvrstoću pri pritisku.
AB  - Many parameters influence on the characteristics of fresh and hardened concrete. One of the most important characteristic of concrete is its porosity. Measure the porosity of fresh concrete is measured by the amount of entrained air. The effect of entrained air in concrete on compressive strength investigated by many authors. On the bases these works we have two formulas applicable in practice. Soft programming techniques especialy neural networks and the formation of databases related to the testing in laboratories for concrete opened up new approaches in predicting the impact of the quantity of entrained air in concrete on compressive strength.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Građevinski materijali i konstrukcije
T1  - Evaluation of air content on concrete compressive strength with classical approach and neural networks
EP  - 54
IS  - 1
SP  - 47
VL  - 55
UR  - https://hdl.handle.net/21.15107/rcub_rims_156
ER  - 
@article{
author = "Bojović, Dragan and Nikolić, Dragan and Janković, Ksenija and Lončar, Ljiljana",
year = "2012",
abstract = "Mnogi parametri utiču na karakteristike svežeg i očvrslog betona. Jedan od najvažnijih svakako jeste poroznost betona. Poroznost svežeg betona meri se količinom uvučenog vazduha. Uticaj uvučenog vazduha na beton i njegovu pritisnu čvrstoću istraživali su mnogi svetski istraživači. Na bazi tih istraživanja, izdvojene su dve, u praksi najviše korišćene, formule. Tehnike mekog programiranja, a posebno neuronske mreže, s formiranim bazama podataka laboratorijskih ispitivanja betona, otvaraju novi pristup u predviđanju uticaja količine uvučenog vazduha u svežem betonu na njegovu čvrstoću pri pritisku., Many parameters influence on the characteristics of fresh and hardened concrete. One of the most important characteristic of concrete is its porosity. Measure the porosity of fresh concrete is measured by the amount of entrained air. The effect of entrained air in concrete on compressive strength investigated by many authors. On the bases these works we have two formulas applicable in practice. Soft programming techniques especialy neural networks and the formation of databases related to the testing in laboratories for concrete opened up new approaches in predicting the impact of the quantity of entrained air in concrete on compressive strength.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Građevinski materijali i konstrukcije",
title = "Evaluation of air content on concrete compressive strength with classical approach and neural networks",
pages = "54-47",
number = "1",
volume = "55",
url = "https://hdl.handle.net/21.15107/rcub_rims_156"
}
Bojović, D., Nikolić, D., Janković, K.,& Lončar, L.. (2012). Evaluation of air content on concrete compressive strength with classical approach and neural networks. in Građevinski materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 55(1), 47-54.
https://hdl.handle.net/21.15107/rcub_rims_156
Bojović D, Nikolić D, Janković K, Lončar L. Evaluation of air content on concrete compressive strength with classical approach and neural networks. in Građevinski materijali i konstrukcije. 2012;55(1):47-54.
https://hdl.handle.net/21.15107/rcub_rims_156 .
Bojović, Dragan, Nikolić, Dragan, Janković, Ksenija, Lončar, Ljiljana, "Evaluation of air content on concrete compressive strength with classical approach and neural networks" in Građevinski materijali i konstrukcije, 55, no. 1 (2012):47-54,
https://hdl.handle.net/21.15107/rcub_rims_156 .

Mix design and engineering properties of ultra high performance self compacting concrete

Nikolić, Dragan; Bojović, Dragan; Janković, Ksenija; Lončar, Ljiljana

(Czech Concrete Soc-Ceska Betonarska Spolecnost Cssi, Prague 1, 2011)

TY  - CONF
AU  - Nikolić, Dragan
AU  - Bojović, Dragan
AU  - Janković, Ksenija
AU  - Lončar, Ljiljana
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/154
AB  - The mechanical properties (compressive strength and flexural strength) were investigated under different curing conditions (standard and steam curing). Silica fumes have characteristics that make them necessary in cement composites with ultra strength properties. The search for substitute products thus appears important if the use of ultra high performance concrete (UHPC) is to become more widespread in the concrete industry. Possibilities of getting ultra high performance self compacting concrete (UHPSCC) with materials available in Serbia, based on experimental work are discussed in this paper. Four series of samples were made with different types of fine reactive additives (silica fume in referent concrete was replaced with metakaolin at 20% and 40% and with fine fly ash at 20%.). The produced mixes had self compacted consistency. The compressive strength varied between 145 and 180 MPa for the steam cered specimens and between 180 and 205 MPa for the ones that had not been heat treated. Furthermore, this paper presents SEM micrographs of C-S-H phase formed after steam curing and autoclaving.
PB  - Czech Concrete Soc-Ceska Betonarska Spolecnost Cssi, Prague 1
C3  - FIB Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2
T1  - Mix design and engineering properties of ultra high performance self compacting concrete
EP  - 356
SP  - 353
UR  - https://hdl.handle.net/21.15107/rcub_rims_154
ER  - 
@conference{
author = "Nikolić, Dragan and Bojović, Dragan and Janković, Ksenija and Lončar, Ljiljana",
year = "2011",
abstract = "The mechanical properties (compressive strength and flexural strength) were investigated under different curing conditions (standard and steam curing). Silica fumes have characteristics that make them necessary in cement composites with ultra strength properties. The search for substitute products thus appears important if the use of ultra high performance concrete (UHPC) is to become more widespread in the concrete industry. Possibilities of getting ultra high performance self compacting concrete (UHPSCC) with materials available in Serbia, based on experimental work are discussed in this paper. Four series of samples were made with different types of fine reactive additives (silica fume in referent concrete was replaced with metakaolin at 20% and 40% and with fine fly ash at 20%.). The produced mixes had self compacted consistency. The compressive strength varied between 145 and 180 MPa for the steam cered specimens and between 180 and 205 MPa for the ones that had not been heat treated. Furthermore, this paper presents SEM micrographs of C-S-H phase formed after steam curing and autoclaving.",
publisher = "Czech Concrete Soc-Ceska Betonarska Spolecnost Cssi, Prague 1",
journal = "FIB Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2",
title = "Mix design and engineering properties of ultra high performance self compacting concrete",
pages = "356-353",
url = "https://hdl.handle.net/21.15107/rcub_rims_154"
}
Nikolić, D., Bojović, D., Janković, K.,& Lončar, L.. (2011). Mix design and engineering properties of ultra high performance self compacting concrete. in FIB Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2
Czech Concrete Soc-Ceska Betonarska Spolecnost Cssi, Prague 1., 353-356.
https://hdl.handle.net/21.15107/rcub_rims_154
Nikolić D, Bojović D, Janković K, Lončar L. Mix design and engineering properties of ultra high performance self compacting concrete. in FIB Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2. 2011;:353-356.
https://hdl.handle.net/21.15107/rcub_rims_154 .
Nikolić, Dragan, Bojović, Dragan, Janković, Ksenija, Lončar, Ljiljana, "Mix design and engineering properties of ultra high performance self compacting concrete" in FIB Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2 (2011):353-356,
https://hdl.handle.net/21.15107/rcub_rims_154 .
1
1

Determination of recycled aggregate concrete degradation by resonance frequency analysis

Janković, Ksenija; Stanković, Srboljub J.; Nikolić, Dragan; Bojović, Dragan; Lončar, Ljiljana

(2011)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Stanković, Srboljub J.
AU  - Nikolić, Dragan
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/153
AB  - The evaluation of the dynamic modulus of elasticity of twelve different concrete mix proportions as a function of the density and degradations due to freeze/thaw cycles is presented in this paper. Pore system and saturation are the main factors for concrete freeze-thaw resistance. The frequency analysis of ultrasonic waves in concrete after every 25 cycles was done. Dynamic modulus of elasticity was determination by resonance frequency analysis. This parameter is 35-50% smaller for concrete with recycled bricks as aggregate than ordinary concrete. For all concrete mixes dynamic and static (measured by destructive testing) modules of elasticity were compared.
T2  - Revista Romana de Materiale/ Romanian Journal of Materials
T1  - Determination of recycled aggregate concrete degradation by resonance frequency analysis
EP  - 25
IS  - 1
SP  - 22
VL  - 41
UR  - https://hdl.handle.net/21.15107/rcub_vinar_4253
ER  - 
@article{
author = "Janković, Ksenija and Stanković, Srboljub J. and Nikolić, Dragan and Bojović, Dragan and Lončar, Ljiljana",
year = "2011",
abstract = "The evaluation of the dynamic modulus of elasticity of twelve different concrete mix proportions as a function of the density and degradations due to freeze/thaw cycles is presented in this paper. Pore system and saturation are the main factors for concrete freeze-thaw resistance. The frequency analysis of ultrasonic waves in concrete after every 25 cycles was done. Dynamic modulus of elasticity was determination by resonance frequency analysis. This parameter is 35-50% smaller for concrete with recycled bricks as aggregate than ordinary concrete. For all concrete mixes dynamic and static (measured by destructive testing) modules of elasticity were compared.",
journal = "Revista Romana de Materiale/ Romanian Journal of Materials",
title = "Determination of recycled aggregate concrete degradation by resonance frequency analysis",
pages = "25-22",
number = "1",
volume = "41",
url = "https://hdl.handle.net/21.15107/rcub_vinar_4253"
}
Janković, K., Stanković, S. J., Nikolić, D., Bojović, D.,& Lončar, L.. (2011). Determination of recycled aggregate concrete degradation by resonance frequency analysis. in Revista Romana de Materiale/ Romanian Journal of Materials, 41(1), 22-25.
https://hdl.handle.net/21.15107/rcub_vinar_4253
Janković K, Stanković SJ, Nikolić D, Bojović D, Lončar L. Determination of recycled aggregate concrete degradation by resonance frequency analysis. in Revista Romana de Materiale/ Romanian Journal of Materials. 2011;41(1):22-25.
https://hdl.handle.net/21.15107/rcub_vinar_4253 .
Janković, Ksenija, Stanković, Srboljub J., Nikolić, Dragan, Bojović, Dragan, Lončar, Ljiljana, "Determination of recycled aggregate concrete degradation by resonance frequency analysis" in Revista Romana de Materiale/ Romanian Journal of Materials, 41, no. 1 (2011):22-25,
https://hdl.handle.net/21.15107/rcub_vinar_4253 .

Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom

Janković, Ksenija; Nikolić, Dragan; Bojović, Dragan; Lončar, Ljiljana; Romakov, Zoran

(Univerzitet u Nišu, Niš, 2011)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Nikolić, Dragan
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
AU  - Romakov, Zoran
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/132
AB  - Procena čvrstoće pri pritisku se postavlja kao važan zadatak proizvođačima betona, naročito pri projektovanju betonskih mešavina i obezbeđenju zahtevanog kvaliteta proizvedenog betona. U radu je prikazano poređenje eksperimentalnih rezultata čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom sa rezultatima dobijenim na osnovu jednačina prikazanih u tehničkoj regulativi. Prikazan je koeficijent determinacije eksperimentalnih podataka i rezultata dobijenih na osnovu preračuna prema jednačinama datim u EN 1992-1-1, ACI 209 i tabeli za preračun datoj u SRPS U.M1.048. Prikaz zavisnosti čvrstoće pri pritisku betona na osnovu jednačina datih u radu se odnosi na određivanje zavisnosti u odnosu na vrstu upotrebljenog cementa i starosti betona negovanog na konstantnoj temperaturi.
AB  - Estimation of concrete strength is an important issue in ready-mixed concrete industry, especially, in proportioning new mixtures and for the quality assurance of the concrete produced. In this article, on the basis of the existing experimental data of compressive strength of normal and recycled aggregate concrete and equation for compressive strength calculating given in Technical regulation are compared. The accuracies of prediction by experimental data obtained in laboratory as well as by EN 1992-1-1, ACI 209 and SRPS U.M1.048 are compared on the basis of the coefficient of determination. The determination of the compressive strengths by the equation described here relies on determination of type of cement and age of concrete with the constant curing temperature.
PB  - Univerzitet u Nišu, Niš
T2  - Facta universitatis - series: Architecture and Civil Engineering
T1  - Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom
T1  - The estimation of compressive strength of normal and recycled aggregate concrete
EP  - 431
IS  - 3
SP  - 419
VL  - 9
DO  - 10.2298/FUACE1103419J
ER  - 
@article{
author = "Janković, Ksenija and Nikolić, Dragan and Bojović, Dragan and Lončar, Ljiljana and Romakov, Zoran",
year = "2011",
abstract = "Procena čvrstoće pri pritisku se postavlja kao važan zadatak proizvođačima betona, naročito pri projektovanju betonskih mešavina i obezbeđenju zahtevanog kvaliteta proizvedenog betona. U radu je prikazano poređenje eksperimentalnih rezultata čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom sa rezultatima dobijenim na osnovu jednačina prikazanih u tehničkoj regulativi. Prikazan je koeficijent determinacije eksperimentalnih podataka i rezultata dobijenih na osnovu preračuna prema jednačinama datim u EN 1992-1-1, ACI 209 i tabeli za preračun datoj u SRPS U.M1.048. Prikaz zavisnosti čvrstoće pri pritisku betona na osnovu jednačina datih u radu se odnosi na određivanje zavisnosti u odnosu na vrstu upotrebljenog cementa i starosti betona negovanog na konstantnoj temperaturi., Estimation of concrete strength is an important issue in ready-mixed concrete industry, especially, in proportioning new mixtures and for the quality assurance of the concrete produced. In this article, on the basis of the existing experimental data of compressive strength of normal and recycled aggregate concrete and equation for compressive strength calculating given in Technical regulation are compared. The accuracies of prediction by experimental data obtained in laboratory as well as by EN 1992-1-1, ACI 209 and SRPS U.M1.048 are compared on the basis of the coefficient of determination. The determination of the compressive strengths by the equation described here relies on determination of type of cement and age of concrete with the constant curing temperature.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta universitatis - series: Architecture and Civil Engineering",
title = "Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom, The estimation of compressive strength of normal and recycled aggregate concrete",
pages = "431-419",
number = "3",
volume = "9",
doi = "10.2298/FUACE1103419J"
}
Janković, K., Nikolić, D., Bojović, D., Lončar, L.,& Romakov, Z.. (2011). Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom. in Facta universitatis - series: Architecture and Civil Engineering
Univerzitet u Nišu, Niš., 9(3), 419-431.
https://doi.org/10.2298/FUACE1103419J
Janković K, Nikolić D, Bojović D, Lončar L, Romakov Z. Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom. in Facta universitatis - series: Architecture and Civil Engineering. 2011;9(3):419-431.
doi:10.2298/FUACE1103419J .
Janković, Ksenija, Nikolić, Dragan, Bojović, Dragan, Lončar, Ljiljana, Romakov, Zoran, "Procena čvrstoće pri pritisku betona sa prirodnim i recikliranim agregatom" in Facta universitatis - series: Architecture and Civil Engineering, 9, no. 3 (2011):419-431,
https://doi.org/10.2298/FUACE1103419J . .
18

Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke

Janković, Ksenija; Bojović, Dragan; Nikolić, Dragan; Lončar, Ljiljana; Romakov, Zoran

(Univerzitet u Nišu, Niš, 2010)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Nikolić, Dragan
AU  - Lončar, Ljiljana
AU  - Romakov, Zoran
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/128
AB  - Predmet istraživanja su betoni spravljeni sa recikliranom opekom kao agregatom. Eksperimentalni rad je obuhvatio više vrsta betona spravljenih sa istom količinom cementa (385 kg/m3) i istom konzistencijom (sleganje oko 1 cm). Kao agregat je korišćena reciklirana opeka i kombinacija reciklirane opeke i prirodnog rečnog agregata. Posmatran je uticaj upotrebljenih frakcija drobljene opeke i njihovog procentualnog učešća na čvrstoću pri pritisku, upijanje vode i otpornost prema dejstvu mraza. Na osnovu rezultata eksperimentalnih istraživanja može se zaključiti da se primenom reciklirane opeke kao agregata dobija novi kompozitni materijal sa zadovoljavajućim fizičko - mehaničkim karakteristikama.
AB  - The investigation included concrete made by using recycled brick as aggregate. Experimental work included several types of concrete made with the same cement content (385 kg/m3), and same consistency (slump about 1 cm). Recycled brick and combination of natural river aggregate and recycled brick were used as aggregates. The influence of percentage and grain size of crushed brick aggregate on concrete compressive strength, water absorption and frost resistance were observed. On the basis of the results obtained during experimental research, a general conclusion can be drawn that the application of recycled concrete as aggregate can lead to new composites with satisfactory physical-mechanical properties.
PB  - Univerzitet u Nišu, Niš
T2  - Facta universitatis - series: Architecture and Civil Engineering
T1  - Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke
T1  - Frost resistance of concrete with crushed brick as aggregate
EP  - 162
IS  - 2
SP  - 155
VL  - 8
DO  - 10.2298/FUACE1002155J
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Nikolić, Dragan and Lončar, Ljiljana and Romakov, Zoran",
year = "2010",
abstract = "Predmet istraživanja su betoni spravljeni sa recikliranom opekom kao agregatom. Eksperimentalni rad je obuhvatio više vrsta betona spravljenih sa istom količinom cementa (385 kg/m3) i istom konzistencijom (sleganje oko 1 cm). Kao agregat je korišćena reciklirana opeka i kombinacija reciklirane opeke i prirodnog rečnog agregata. Posmatran je uticaj upotrebljenih frakcija drobljene opeke i njihovog procentualnog učešća na čvrstoću pri pritisku, upijanje vode i otpornost prema dejstvu mraza. Na osnovu rezultata eksperimentalnih istraživanja može se zaključiti da se primenom reciklirane opeke kao agregata dobija novi kompozitni materijal sa zadovoljavajućim fizičko - mehaničkim karakteristikama., The investigation included concrete made by using recycled brick as aggregate. Experimental work included several types of concrete made with the same cement content (385 kg/m3), and same consistency (slump about 1 cm). Recycled brick and combination of natural river aggregate and recycled brick were used as aggregates. The influence of percentage and grain size of crushed brick aggregate on concrete compressive strength, water absorption and frost resistance were observed. On the basis of the results obtained during experimental research, a general conclusion can be drawn that the application of recycled concrete as aggregate can lead to new composites with satisfactory physical-mechanical properties.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta universitatis - series: Architecture and Civil Engineering",
title = "Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke, Frost resistance of concrete with crushed brick as aggregate",
pages = "162-155",
number = "2",
volume = "8",
doi = "10.2298/FUACE1002155J"
}
Janković, K., Bojović, D., Nikolić, D., Lončar, L.,& Romakov, Z.. (2010). Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke. in Facta universitatis - series: Architecture and Civil Engineering
Univerzitet u Nišu, Niš., 8(2), 155-162.
https://doi.org/10.2298/FUACE1002155J
Janković K, Bojović D, Nikolić D, Lončar L, Romakov Z. Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke. in Facta universitatis - series: Architecture and Civil Engineering. 2010;8(2):155-162.
doi:10.2298/FUACE1002155J .
Janković, Ksenija, Bojović, Dragan, Nikolić, Dragan, Lončar, Ljiljana, Romakov, Zoran, "Otpornost prema dejstvu mraza betona sa agregatom od drobljene opeke" in Facta universitatis - series: Architecture and Civil Engineering, 8, no. 2 (2010):155-162,
https://doi.org/10.2298/FUACE1002155J . .
13

Neka svojstva betona ultra visokih čvrstoća

Janković, Ksenija; Nikolić, Dragan; Bojović, Dragan; Lončar, Ljiljana

(Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd, 2010)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Nikolić, Dragan
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/120
AB  - Značajno mesto u primeni novih materijala u građevinarstvu zauzima upotreba betona ultra visokih čvrstoća. Struktura, svojstva i tehnologija izrade ove vrsta betona se intenzivno proučava poslednjih petnaest godina. U ovom radu je prikazana mogućnost dobijanja betona ultra visokih čvrstoća na osnovu eksperimentalnih istraživanja primenom komponentnih materijala dostupnih u Srbiji. Spravljene su tri serije uzoraka sa različitim vrstama cemenata. Korišćena su čelična vlakna dužine 8mm i poprečnog preseka 0.175mm. Prikazana su fizičko-mehanička svojstva betona ultra visokih čvrstoća i analizirana je mikrostruktura ovog kompozita.
AB  - Modern civil engineering is characterized with increased application of Ultra-high strength concrete (UHSC). Structure, properties and manufacturing technologies of UHSC are intensively analyzed in the last fifteen years. Possibilities of getting UHSC designed with the materials that are available in Serbian market, were tested in the experimental work; they are shown in this paper. Three series of samples were made with different types of cement. Steel fibers were used: length 8 mm, diameter 0.175 mm. Physical-mechanical properties of UHSC are presented and microstructure of concrete was observed, as well.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Materijali i konstrukcije
T1  - Neka svojstva betona ultra visokih čvrstoća
EP  - 51
IS  - 1
SP  - 43
VL  - 53
UR  - https://hdl.handle.net/21.15107/rcub_rims_120
ER  - 
@article{
author = "Janković, Ksenija and Nikolić, Dragan and Bojović, Dragan and Lončar, Ljiljana",
year = "2010",
abstract = "Značajno mesto u primeni novih materijala u građevinarstvu zauzima upotreba betona ultra visokih čvrstoća. Struktura, svojstva i tehnologija izrade ove vrsta betona se intenzivno proučava poslednjih petnaest godina. U ovom radu je prikazana mogućnost dobijanja betona ultra visokih čvrstoća na osnovu eksperimentalnih istraživanja primenom komponentnih materijala dostupnih u Srbiji. Spravljene su tri serije uzoraka sa različitim vrstama cemenata. Korišćena su čelična vlakna dužine 8mm i poprečnog preseka 0.175mm. Prikazana su fizičko-mehanička svojstva betona ultra visokih čvrstoća i analizirana je mikrostruktura ovog kompozita., Modern civil engineering is characterized with increased application of Ultra-high strength concrete (UHSC). Structure, properties and manufacturing technologies of UHSC are intensively analyzed in the last fifteen years. Possibilities of getting UHSC designed with the materials that are available in Serbian market, were tested in the experimental work; they are shown in this paper. Three series of samples were made with different types of cement. Steel fibers were used: length 8 mm, diameter 0.175 mm. Physical-mechanical properties of UHSC are presented and microstructure of concrete was observed, as well.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Materijali i konstrukcije",
title = "Neka svojstva betona ultra visokih čvrstoća",
pages = "51-43",
number = "1",
volume = "53",
url = "https://hdl.handle.net/21.15107/rcub_rims_120"
}
Janković, K., Nikolić, D., Bojović, D.,& Lončar, L.. (2010). Neka svojstva betona ultra visokih čvrstoća. in Materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 53(1), 43-51.
https://hdl.handle.net/21.15107/rcub_rims_120
Janković K, Nikolić D, Bojović D, Lončar L. Neka svojstva betona ultra visokih čvrstoća. in Materijali i konstrukcije. 2010;53(1):43-51.
https://hdl.handle.net/21.15107/rcub_rims_120 .
Janković, Ksenija, Nikolić, Dragan, Bojović, Dragan, Lončar, Ljiljana, "Neka svojstva betona ultra visokih čvrstoća" in Materijali i konstrukcije, 53, no. 1 (2010):43-51,
https://hdl.handle.net/21.15107/rcub_rims_120 .

Sulphur concrete

Bojović, Dragan; Janković, Ksenija; Lončar, Ljiljana; Kačarević, Z.D.; Terzić, Anja

(Structural Engineering Conferences, SECON, 2007)

TY  - CONF
AU  - Bojović, Dragan
AU  - Janković, Ksenija
AU  - Lončar, Ljiljana
AU  - Kačarević, Z.D.
AU  - Terzić, Anja
PY  - 2007
UR  - http://rims.institutims.rs/handle/123456789/67
AB  - Sulphur concrete is a relatively new material, and although similar in final appearance to portland cement concrete, its manufacture, handling, use, and testing are different. Sulphur concrete is a thermoplastic material prepared by hot-mixing sulphur cements and mineral aggregates. Sulphur concrete solidifies and gains strength rapidly upon cooling. As with other concrete materials, such a portland cement and asphalt concrete, sulphur concrete is a generic term for a range of products that vary with aggregates, sulphur cements, and proportions used. By using sulphur cement binders and aggregates that are not attacked by many mineral acid and salt solutions, high-strength corrosion-resistant sulphur concrete can be produced for use in certain applications where other construction materials deteriorate rapidly. Sulphur concretes are generally not resistant to alkalis or oxidizers but exhibit excellent performance in many acidic and salt environment.
PB  - Structural Engineering Conferences, SECON
C3  - Concrete Structures - Stimulators of Development, Proceedings of the fib Symposium Dubrovnik 2007
T1  - Sulphur concrete
EP  - 414
SP  - 407
UR  - https://hdl.handle.net/21.15107/rcub_rims_67
ER  - 
@conference{
author = "Bojović, Dragan and Janković, Ksenija and Lončar, Ljiljana and Kačarević, Z.D. and Terzić, Anja",
year = "2007",
abstract = "Sulphur concrete is a relatively new material, and although similar in final appearance to portland cement concrete, its manufacture, handling, use, and testing are different. Sulphur concrete is a thermoplastic material prepared by hot-mixing sulphur cements and mineral aggregates. Sulphur concrete solidifies and gains strength rapidly upon cooling. As with other concrete materials, such a portland cement and asphalt concrete, sulphur concrete is a generic term for a range of products that vary with aggregates, sulphur cements, and proportions used. By using sulphur cement binders and aggregates that are not attacked by many mineral acid and salt solutions, high-strength corrosion-resistant sulphur concrete can be produced for use in certain applications where other construction materials deteriorate rapidly. Sulphur concretes are generally not resistant to alkalis or oxidizers but exhibit excellent performance in many acidic and salt environment.",
publisher = "Structural Engineering Conferences, SECON",
journal = "Concrete Structures - Stimulators of Development, Proceedings of the fib Symposium Dubrovnik 2007",
title = "Sulphur concrete",
pages = "414-407",
url = "https://hdl.handle.net/21.15107/rcub_rims_67"
}
Bojović, D., Janković, K., Lončar, L., Kačarević, Z.D.,& Terzić, A.. (2007). Sulphur concrete. in Concrete Structures - Stimulators of Development, Proceedings of the fib Symposium Dubrovnik 2007
Structural Engineering Conferences, SECON., 407-414.
https://hdl.handle.net/21.15107/rcub_rims_67
Bojović D, Janković K, Lončar L, Kačarević Z, Terzić A. Sulphur concrete. in Concrete Structures - Stimulators of Development, Proceedings of the fib Symposium Dubrovnik 2007. 2007;:407-414.
https://hdl.handle.net/21.15107/rcub_rims_67 .
Bojović, Dragan, Janković, Ksenija, Lončar, Ljiljana, Kačarević, Z.D., Terzić, Anja, "Sulphur concrete" in Concrete Structures - Stimulators of Development, Proceedings of the fib Symposium Dubrovnik 2007 (2007):407-414,
https://hdl.handle.net/21.15107/rcub_rims_67 .

Projektovanje betonskih mešavina za izgradnju Avalskog tornja

Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana; Kačarević, Zoran; Nikolić, Dragan

(Univerzitet u Novom Sadu - Građevinski fakultet, Subotica, 2007)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
AU  - Kačarević, Zoran
AU  - Nikolić, Dragan
PY  - 2007
UR  - http://rims.institutims.rs/handle/123456789/65
AB  - Nove vrste betona u svetskoj praksi su u stalnoj upotrebi. Primena samozbijajućih betona u Srbiji je počela pre nekoliko godina. Za izgradnju Avalskog tornja koristiće se ova vrsta betona. Potrebe za dobrom završnom obradom, kratkim rokovima kao i nižom cenom izgradnje uputili su izvođača na primenu samozbijajućih betona.
AB  - In the world, new kinds of concrete are constantly being put to use. In the last few years we have made self-compacting concrete in Serbia. This kind of concrete will be use for construction of Avala tower. The contractor chose self-compacting concrete because of the need for excellent finishing, short deadlines and lower cost of building.
PB  - Univerzitet u Novom Sadu - Građevinski fakultet, Subotica
T2  - Zbornik radova Građevinskog fakulteta, Subotica
T1  - Projektovanje betonskih mešavina za izgradnju Avalskog tornja
T1  - Mix design of concrete for Avala tower
EP  - 120
IS  - 16
SP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_rims_65
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Lončar, Ljiljana and Kačarević, Zoran and Nikolić, Dragan",
year = "2007",
abstract = "Nove vrste betona u svetskoj praksi su u stalnoj upotrebi. Primena samozbijajućih betona u Srbiji je počela pre nekoliko godina. Za izgradnju Avalskog tornja koristiće se ova vrsta betona. Potrebe za dobrom završnom obradom, kratkim rokovima kao i nižom cenom izgradnje uputili su izvođača na primenu samozbijajućih betona., In the world, new kinds of concrete are constantly being put to use. In the last few years we have made self-compacting concrete in Serbia. This kind of concrete will be use for construction of Avala tower. The contractor chose self-compacting concrete because of the need for excellent finishing, short deadlines and lower cost of building.",
publisher = "Univerzitet u Novom Sadu - Građevinski fakultet, Subotica",
journal = "Zbornik radova Građevinskog fakulteta, Subotica",
title = "Projektovanje betonskih mešavina za izgradnju Avalskog tornja, Mix design of concrete for Avala tower",
pages = "120-115",
number = "16",
url = "https://hdl.handle.net/21.15107/rcub_rims_65"
}
Janković, K., Bojović, D., Lončar, L., Kačarević, Z.,& Nikolić, D.. (2007). Projektovanje betonskih mešavina za izgradnju Avalskog tornja. in Zbornik radova Građevinskog fakulteta, Subotica
Univerzitet u Novom Sadu - Građevinski fakultet, Subotica.(16), 115-120.
https://hdl.handle.net/21.15107/rcub_rims_65
Janković K, Bojović D, Lončar L, Kačarević Z, Nikolić D. Projektovanje betonskih mešavina za izgradnju Avalskog tornja. in Zbornik radova Građevinskog fakulteta, Subotica. 2007;(16):115-120.
https://hdl.handle.net/21.15107/rcub_rims_65 .
Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, Kačarević, Zoran, Nikolić, Dragan, "Projektovanje betonskih mešavina za izgradnju Avalskog tornja" in Zbornik radova Građevinskog fakulteta, Subotica, no. 16 (2007):115-120,
https://hdl.handle.net/21.15107/rcub_rims_65 .

Some properties of foam concrete

Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana; Kačarević, Zoran

(Univerzitet u Novom Sadu - Građevinski fakultet, Subotica, 2007)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
AU  - Kačarević, Zoran
PY  - 2007
UR  - http://rims.institutims.rs/handle/123456789/64
AB  - In this paper materials which can be ingredients for foam concrete are given The most important properties of foam concrete are presented. Also, the results of our own investigation are shown.
PB  - Univerzitet u Novom Sadu - Građevinski fakultet, Subotica
T2  - Zbornik radova Građevinskog fakulteta, Subotica
T1  - Some properties of foam concrete
EP  - 114
IS  - 16
SP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_rims_64
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Lončar, Ljiljana and Kačarević, Zoran",
year = "2007",
abstract = "In this paper materials which can be ingredients for foam concrete are given The most important properties of foam concrete are presented. Also, the results of our own investigation are shown.",
publisher = "Univerzitet u Novom Sadu - Građevinski fakultet, Subotica",
journal = "Zbornik radova Građevinskog fakulteta, Subotica",
title = "Some properties of foam concrete",
pages = "114-109",
number = "16",
url = "https://hdl.handle.net/21.15107/rcub_rims_64"
}
Janković, K., Bojović, D., Lončar, L.,& Kačarević, Z.. (2007). Some properties of foam concrete. in Zbornik radova Građevinskog fakulteta, Subotica
Univerzitet u Novom Sadu - Građevinski fakultet, Subotica.(16), 109-114.
https://hdl.handle.net/21.15107/rcub_rims_64
Janković K, Bojović D, Lončar L, Kačarević Z. Some properties of foam concrete. in Zbornik radova Građevinskog fakulteta, Subotica. 2007;(16):109-114.
https://hdl.handle.net/21.15107/rcub_rims_64 .
Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, Kačarević, Zoran, "Some properties of foam concrete" in Zbornik radova Građevinskog fakulteta, Subotica, no. 16 (2007):109-114,
https://hdl.handle.net/21.15107/rcub_rims_64 .

Neka svojstva peno-betona

Janković, Ksenija; Bojović, Dragan; Lončar, Ljiljana

(Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš, 2007)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Bojović, Dragan
AU  - Lončar, Ljiljana
PY  - 2007
UR  - http://rims.institutims.rs/handle/123456789/59
AB  - U svetskoj praksi primena peno - betona je veoma raširena, naročito za prekrivanje i termičku izolaciju industrijskih i komercijalnih zgrada. Ovim projektom hteli smo da približimo građevinskoj javnosti mogućnosti primene određenih materijala, njihovih svojstava, tehnike dobijanja peno - betona i adekvatne načine ugradnje. Naznačena su glavna svojstva peno - betona (zapreminska masa u suvom stanju, zapreminska masa u svežem stanju, pritisna čvrstoća, modul elastičnosti, skupljanje usled sušenja, termička ekspanzija termička provodljivost..). Takođe, ovde se daju mogućnosti primene peno betona u određenim delovima konstrukcije. Važno je napomenuti da je proizvodnja peno - betona u Evropi u ekspanziji, dok se peno - beton u Americi i Indoneziji koristi u značajnoj meri. Na osnovu toga jasno je da su i rezultati istraživanja na ovom polju u Americi na daleko višem nivou nego u Evropi.
PB  - Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš
T2  - Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš
T1  - Neka svojstva peno-betona
EP  - 66
IS  - 22
SP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_rims_59
ER  - 
@article{
author = "Janković, Ksenija and Bojović, Dragan and Lončar, Ljiljana",
year = "2007",
abstract = "U svetskoj praksi primena peno - betona je veoma raširena, naročito za prekrivanje i termičku izolaciju industrijskih i komercijalnih zgrada. Ovim projektom hteli smo da približimo građevinskoj javnosti mogućnosti primene određenih materijala, njihovih svojstava, tehnike dobijanja peno - betona i adekvatne načine ugradnje. Naznačena su glavna svojstva peno - betona (zapreminska masa u suvom stanju, zapreminska masa u svežem stanju, pritisna čvrstoća, modul elastičnosti, skupljanje usled sušenja, termička ekspanzija termička provodljivost..). Takođe, ovde se daju mogućnosti primene peno betona u određenim delovima konstrukcije. Važno je napomenuti da je proizvodnja peno - betona u Evropi u ekspanziji, dok se peno - beton u Americi i Indoneziji koristi u značajnoj meri. Na osnovu toga jasno je da su i rezultati istraživanja na ovom polju u Americi na daleko višem nivou nego u Evropi.",
publisher = "Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš",
journal = "Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš",
title = "Neka svojstva peno-betona",
pages = "66-57",
number = "22",
url = "https://hdl.handle.net/21.15107/rcub_rims_59"
}
Janković, K., Bojović, D.,& Lončar, L.. (2007). Neka svojstva peno-betona. in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš
Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš.(22), 57-66.
https://hdl.handle.net/21.15107/rcub_rims_59
Janković K, Bojović D, Lončar L. Neka svojstva peno-betona. in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš. 2007;(22):57-66.
https://hdl.handle.net/21.15107/rcub_rims_59 .
Janković, Ksenija, Bojović, Dragan, Lončar, Ljiljana, "Neka svojstva peno-betona" in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš, no. 22 (2007):57-66,
https://hdl.handle.net/21.15107/rcub_rims_59 .

Poboljšanje svojstava peno-betona mikroarmiranjem

Bojović, Dragan; Janković, Ksenija; Romakov, Zoran; Kačarević, Zoran; Lončar, Ljiljana

(2007)

TY  - GEN
AU  - Bojović, Dragan
AU  - Janković, Ksenija
AU  - Romakov, Zoran
AU  - Kačarević, Zoran
AU  - Lončar, Ljiljana
PY  - 2007
UR  - http://rims.institutims.rs/handle/123456789/552
T1  - Poboljšanje svojstava peno-betona mikroarmiranjem
UR  - https://hdl.handle.net/21.15107/rcub_rims_552
ER  - 
@misc{
author = "Bojović, Dragan and Janković, Ksenija and Romakov, Zoran and Kačarević, Zoran and Lončar, Ljiljana",
year = "2007",
title = "Poboljšanje svojstava peno-betona mikroarmiranjem",
url = "https://hdl.handle.net/21.15107/rcub_rims_552"
}
Bojović, D., Janković, K., Romakov, Z., Kačarević, Z.,& Lončar, L.. (2007). Poboljšanje svojstava peno-betona mikroarmiranjem. .
https://hdl.handle.net/21.15107/rcub_rims_552
Bojović D, Janković K, Romakov Z, Kačarević Z, Lončar L. Poboljšanje svojstava peno-betona mikroarmiranjem. 2007;.
https://hdl.handle.net/21.15107/rcub_rims_552 .
Bojović, Dragan, Janković, Ksenija, Romakov, Zoran, Kačarević, Zoran, Lončar, Ljiljana, "Poboljšanje svojstava peno-betona mikroarmiranjem" (2007),
https://hdl.handle.net/21.15107/rcub_rims_552 .

Postupak dobijanja samozbijajućih betona

Bojović, Dragan; Janković, Ksenija; Romakov, Zoran; Kačarević, Zoran; Lončar, Ljiljana

(2006)

TY  - GEN
AU  - Bojović, Dragan
AU  - Janković, Ksenija
AU  - Romakov, Zoran
AU  - Kačarević, Zoran
AU  - Lončar, Ljiljana
PY  - 2006
UR  - http://rims.institutims.rs/handle/123456789/551
T1  - Postupak dobijanja samozbijajućih betona
UR  - https://hdl.handle.net/21.15107/rcub_rims_551
ER  - 
@misc{
author = "Bojović, Dragan and Janković, Ksenija and Romakov, Zoran and Kačarević, Zoran and Lončar, Ljiljana",
year = "2006",
title = "Postupak dobijanja samozbijajućih betona",
url = "https://hdl.handle.net/21.15107/rcub_rims_551"
}
Bojović, D., Janković, K., Romakov, Z., Kačarević, Z.,& Lončar, L.. (2006). Postupak dobijanja samozbijajućih betona. .
https://hdl.handle.net/21.15107/rcub_rims_551
Bojović D, Janković K, Romakov Z, Kačarević Z, Lončar L. Postupak dobijanja samozbijajućih betona. 2006;.
https://hdl.handle.net/21.15107/rcub_rims_551 .
Bojović, Dragan, Janković, Ksenija, Romakov, Zoran, Kačarević, Zoran, Lončar, Ljiljana, "Postupak dobijanja samozbijajućih betona" (2006),
https://hdl.handle.net/21.15107/rcub_rims_551 .

Some experience of concrete design in marine structures

Romakov, Zoran; Janković, Ksenija; Kačarević, Z.; Lončar, Ljiljana

(Thomas Telford Services Ltd, 2005)

TY  - CONF
AU  - Romakov, Zoran
AU  - Janković, Ksenija
AU  - Kačarević, Z.
AU  - Lončar, Ljiljana
PY  - 2005
UR  - http://rims.institutims.rs/handle/123456789/39
AB  - For reconstruction of northwest breakwater in Tripoli harbour / Libya, about 4500 m long, it is necessary to produce various concrete elements (cubes and accropodes) in total amount of 550000 m 3 . Volumes of cubes are 6.3, 8.5 and 12.7 m 3 , volumes of accropodes are 6.3 and 9.0 m 3 . After preliminary trials and trial production optimum mix proportion has been chosen, meeting requirements of Technical specifications. One of the reasons for concrete blocks cracking is temperature difference between core and outher surface of the blocks, so we made blocks with new mix proportions (three different cement content). Measuring of temperatures has been performed in three characteristic points: in the middle of the cube, in the middle of vertical outer surface and in the middle of horizontal upper edge. Finally we accepted optimal mix proportion.
PB  - Thomas Telford Services Ltd
C3  - Proceedings of the International Conference on Concrete for Transportation Infrastructure
T1  - Some experience of concrete design in marine structures
EP  - 348
SP  - 341
UR  - https://hdl.handle.net/21.15107/rcub_rims_39
ER  - 
@conference{
author = "Romakov, Zoran and Janković, Ksenija and Kačarević, Z. and Lončar, Ljiljana",
year = "2005",
abstract = "For reconstruction of northwest breakwater in Tripoli harbour / Libya, about 4500 m long, it is necessary to produce various concrete elements (cubes and accropodes) in total amount of 550000 m 3 . Volumes of cubes are 6.3, 8.5 and 12.7 m 3 , volumes of accropodes are 6.3 and 9.0 m 3 . After preliminary trials and trial production optimum mix proportion has been chosen, meeting requirements of Technical specifications. One of the reasons for concrete blocks cracking is temperature difference between core and outher surface of the blocks, so we made blocks with new mix proportions (three different cement content). Measuring of temperatures has been performed in three characteristic points: in the middle of the cube, in the middle of vertical outer surface and in the middle of horizontal upper edge. Finally we accepted optimal mix proportion.",
publisher = "Thomas Telford Services Ltd",
journal = "Proceedings of the International Conference on Concrete for Transportation Infrastructure",
title = "Some experience of concrete design in marine structures",
pages = "348-341",
url = "https://hdl.handle.net/21.15107/rcub_rims_39"
}
Romakov, Z., Janković, K., Kačarević, Z.,& Lončar, L.. (2005). Some experience of concrete design in marine structures. in Proceedings of the International Conference on Concrete for Transportation Infrastructure
Thomas Telford Services Ltd., 341-348.
https://hdl.handle.net/21.15107/rcub_rims_39
Romakov Z, Janković K, Kačarević Z, Lončar L. Some experience of concrete design in marine structures. in Proceedings of the International Conference on Concrete for Transportation Infrastructure. 2005;:341-348.
https://hdl.handle.net/21.15107/rcub_rims_39 .
Romakov, Zoran, Janković, Ksenija, Kačarević, Z., Lončar, Ljiljana, "Some experience of concrete design in marine structures" in Proceedings of the International Conference on Concrete for Transportation Infrastructure (2005):341-348,
https://hdl.handle.net/21.15107/rcub_rims_39 .

Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers

Janković, Ksenija; Lončar, Ljiljana

(American Concrete Institute, 2001)

TY  - JOUR
AU  - Janković, Ksenija
AU  - Lončar, Ljiljana
PY  - 2001
UR  - http://rims.institutims.rs/handle/123456789/20
AB  - Lightweight concrete with lower water absorption for thin structural elements was goal of investigation. Polypropylene fibers contributed to concrete ductility. For lower bulk density we used polystyrene grains. We used polymer modified concrete for realization of better adhezion between concrete and fiber. Polymer membranes cover the micro - fissures wich may appear due to shrinkage, so polymer modified concrete has smaller water absorption. The influence of polypropylene fiber and cement quantity on properties concrete is investigated in this paper. Experimental work included several kinds of concrete, made with different cement contents, consistency, quantity of polypropylene fibers and with polymer latex, styrenebutadiene rubber modifier. River aggregate with grain size of up to 8 mm was used. The polymer portland cement concrete properties depend, not only on composition but also on the way of preparation, compacting and curing. Curing includes: 1 day in wet conditions, 6 days in the water followed by 21 days in the air. Compressive and splitting tensile strength and water absorption values are reported. It can be concluded that using of polypropylene fibers have better effect on splitting to compressive strength ratio for concrete with bulk density lower than 1800 kg/m3
PB  - American Concrete Institute
T2  - American Concrete Institute, ACI Special Publication
T1  - Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers
EP  - 490
SP  - 483
VL  - SP-200
UR  - https://hdl.handle.net/21.15107/rcub_rims_20
ER  - 
@article{
author = "Janković, Ksenija and Lončar, Ljiljana",
year = "2001",
abstract = "Lightweight concrete with lower water absorption for thin structural elements was goal of investigation. Polypropylene fibers contributed to concrete ductility. For lower bulk density we used polystyrene grains. We used polymer modified concrete for realization of better adhezion between concrete and fiber. Polymer membranes cover the micro - fissures wich may appear due to shrinkage, so polymer modified concrete has smaller water absorption. The influence of polypropylene fiber and cement quantity on properties concrete is investigated in this paper. Experimental work included several kinds of concrete, made with different cement contents, consistency, quantity of polypropylene fibers and with polymer latex, styrenebutadiene rubber modifier. River aggregate with grain size of up to 8 mm was used. The polymer portland cement concrete properties depend, not only on composition but also on the way of preparation, compacting and curing. Curing includes: 1 day in wet conditions, 6 days in the water followed by 21 days in the air. Compressive and splitting tensile strength and water absorption values are reported. It can be concluded that using of polypropylene fibers have better effect on splitting to compressive strength ratio for concrete with bulk density lower than 1800 kg/m3",
publisher = "American Concrete Institute",
journal = "American Concrete Institute, ACI Special Publication",
title = "Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers",
pages = "490-483",
volume = "SP-200",
url = "https://hdl.handle.net/21.15107/rcub_rims_20"
}
Janković, K.,& Lončar, L.. (2001). Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers. in American Concrete Institute, ACI Special Publication
American Concrete Institute., SP-200, 483-490.
https://hdl.handle.net/21.15107/rcub_rims_20
Janković K, Lončar L. Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers. in American Concrete Institute, ACI Special Publication. 2001;SP-200:483-490.
https://hdl.handle.net/21.15107/rcub_rims_20 .
Janković, Ksenija, Lončar, Ljiljana, "Polymer modified concrete with expanded polystyrene grains reinforced with polypropylene fibers" in American Concrete Institute, ACI Special Publication, SP-200 (2001):483-490,
https://hdl.handle.net/21.15107/rcub_rims_20 .