TY  - JOUR
AU  - Arsenović, Milica
AU  - Radojević, Zagorka
AU  - Stanković, Slavka
AU  - Lalić, Željko
AU  - Pezo, Lato
PY  - 2013
UR  - http://rims.institutims.rs/handle/123456789/224
AB  - The need of testing the quality of brickclay arises in all brick factories, with the opening of new deposits. The analyses are both time and economically consuming, so the aim of this study was to shorten the procedure using the already known data. This study was focused on determining the usability of heavy clays, when only the raw material major elements chemical composition is determined. The effects of chemical composition, firing temperature, and several shape formats of laboratory samples on the final properties were investigated. Chemical composition of major elements was determined on the basis of classical silicate analysis. Firing was conducted in an oxidizing atmosphere, while maintaining all other experimental conditions constant, except the final temperature. Principal component analysis (PCA) was used to determinate groups of samples according to similarity of chemical composition. Prediction of compressive strength (CS) and water absorption (WA) was done by developing five artificial neural networks (ANN). The average regression coefficients r(2) were used to explore the confidence level of the models. Developed models were able to predict CS and WA in a wide range of chemical composition and temperature treatment data, and the highest average r(2) of 0.923 for CS was obtained, while r(2) for WA was 0.958. The wide range of processing variables was considered in the model formulation, and its easy implementation in a spreadsheet using a set of equations makes it very useful and practical for CS and WA prediction. As it is known from literature, all the parameters entered this analysis are dependent on each other, but their mutual relationship was not quantified yet. Most importantly-the developed neural networks can be used on a global scale.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - What to expect from heavy clay?
EP  - 1675
IS  - 2
SP  - 1667
VL  - 39
DO  - 10.1016/j.ceramint.2012.08.009
ER  - 

@article{
author = "Arsenović, Milica and Radojević, Zagorka and Stanković, Slavka and Lalić, Željko and Pezo, Lato",
year = "2013",
abstract = "The need of testing the quality of brickclay arises in all brick factories, with the opening of new deposits. The analyses are both time and economically consuming, so the aim of this study was to shorten the procedure using the already known data. This study was focused on determining the usability of heavy clays, when only the raw material major elements chemical composition is determined. The effects of chemical composition, firing temperature, and several shape formats of laboratory samples on the final properties were investigated. Chemical composition of major elements was determined on the basis of classical silicate analysis. Firing was conducted in an oxidizing atmosphere, while maintaining all other experimental conditions constant, except the final temperature. Principal component analysis (PCA) was used to determinate groups of samples according to similarity of chemical composition. Prediction of compressive strength (CS) and water absorption (WA) was done by developing five artificial neural networks (ANN). The average regression coefficients r(2) were used to explore the confidence level of the models. Developed models were able to predict CS and WA in a wide range of chemical composition and temperature treatment data, and the highest average r(2) of 0.923 for CS was obtained, while r(2) for WA was 0.958. The wide range of processing variables was considered in the model formulation, and its easy implementation in a spreadsheet using a set of equations makes it very useful and practical for CS and WA prediction. As it is known from literature, all the parameters entered this analysis are dependent on each other, but their mutual relationship was not quantified yet. Most importantly-the developed neural networks can be used on a global scale.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "What to expect from heavy clay?",
pages = "1675-1667",
number = "2",
volume = "39",
doi = "10.1016/j.ceramint.2012.08.009"
}

Arsenović, M., Radojević, Z., Stanković, S., Lalić, Ž.,& Pezo, L.. (2013). What to expect from heavy clay?. in Ceramics International
Elsevier Sci Ltd, Oxford., 39(2), 1667-1675.
https://doi.org/10.1016/j.ceramint.2012.08.009

Arsenović M, Radojević Z, Stanković S, Lalić Ž, Pezo L. What to expect from heavy clay?. in Ceramics International. 2013;39(2):1667-1675.
doi:10.1016/j.ceramint.2012.08.009 .

Arsenović, Milica, Radojević, Zagorka, Stanković, Slavka, Lalić, Željko, Pezo, Lato, "What to expect from heavy clay?" in Ceramics International, 39, no. 2 (2013):1667-1675,
https://doi.org/10.1016/j.ceramint.2012.08.009 . .

TY  - JOUR
AU  - Lalić, Željko
AU  - Arsenović, Milica
AU  - Janacković, Đorđe
AU  - Vasić, Miloš
AU  - Radojević, Zagorka
PY  - 2009
UR  - http://rims.institutims.rs/handle/123456789/104
AB  - In this paper are presented testing results during process of fast drying at conditions of increased temperature. Three different masonry raw materials were examined using recircular laboratory dryer with air recirculation. It is concluded that samples containing more clay minerals and having better bind qualities are appropriate for increased temperature fast drying appliance. Raw materials which do not belong to the mentioned group can not be used in these processes, even in the case of slower drying regime, although their both physical and mechanical (technological) characteristics do not refer to such behavior.
T2  - Revista Romana de Materiale/ Romanian Journal of Materials
T1  - Influence of increased temperature on clay fast drying process
EP  - 179
IS  - 3
SP  - 175
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1365
ER  - 

@article{
author = "Lalić, Željko and Arsenović, Milica and Janacković, Đorđe and Vasić, Miloš and Radojević, Zagorka",
year = "2009",
abstract = "In this paper are presented testing results during process of fast drying at conditions of increased temperature. Three different masonry raw materials were examined using recircular laboratory dryer with air recirculation. It is concluded that samples containing more clay minerals and having better bind qualities are appropriate for increased temperature fast drying appliance. Raw materials which do not belong to the mentioned group can not be used in these processes, even in the case of slower drying regime, although their both physical and mechanical (technological) characteristics do not refer to such behavior.",
journal = "Revista Romana de Materiale/ Romanian Journal of Materials",
title = "Influence of increased temperature on clay fast drying process",
pages = "179-175",
number = "3",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1365"
}

Lalić, Ž., Arsenović, M., Janacković, Đ., Vasić, M.,& Radojević, Z.. (2009). Influence of increased temperature on clay fast drying process. in Revista Romana de Materiale/ Romanian Journal of Materials, 39(3), 175-179.
https://hdl.handle.net/21.15107/rcub_technorep_1365

Lalić Ž, Arsenović M, Janacković Đ, Vasić M, Radojević Z. Influence of increased temperature on clay fast drying process. in Revista Romana de Materiale/ Romanian Journal of Materials. 2009;39(3):175-179.
https://hdl.handle.net/21.15107/rcub_technorep_1365 .

Lalić, Željko, Arsenović, Milica, Janacković, Đorđe, Vasić, Miloš, Radojević, Zagorka, "Influence of increased temperature on clay fast drying process" in Revista Romana de Materiale/ Romanian Journal of Materials, 39, no. 3 (2009):175-179,
https://hdl.handle.net/21.15107/rcub_technorep_1365 .

TY  - JOUR
AU  - Lalić, Željko
AU  - Radojević, Zagorka
AU  - Vasić, Radomir
PY  - 2005
UR  - http://rims.institutims.rs/handle/123456789/41
AB  - U ovom radu je ispitana primenljivost dva konvencionalna matematička modela (model tankog sloja i Tomas&Skansi model) kinetike konvektivnog sušenja, uzorka oblika pločice. Ispitivanje je izvršeno u laboratorijskoj recirkulacionoj sušnici u temperaturnom opsegu od 40 do 70ºC. Parametri modela su dobijeni aproksimacijom eksperimentalnih rezultata. Takođe su analizirani uticaji uslova sušenja na parametre matematičkih modela.
AB  - In this work, were examined the applicability of two conventional mathematical model (thinlayer equation and Tomas&Skansi model) for convective drying of clay slab. The research was made in laboratory dryer for temperature 40 to 70ºC. Parameters of the selected mathematical models are estimated by fitting them to experimental data. The influences of process conditions on model parameters were also analyzed.
PB  - Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd
T2  - Izgradnja
T1  - Analiza matematičkih modela sušenja opekarskih sirovina
T1  - Mathematical model analysis of brick raw materials doping
EP  - 174
IS  - 7-9
SP  - 170
VL  - 59
UR  - https://hdl.handle.net/21.15107/rcub_rims_41
ER  - 

@article{
author = "Lalić, Željko and Radojević, Zagorka and Vasić, Radomir",
year = "2005",
abstract = "U ovom radu je ispitana primenljivost dva konvencionalna matematička modela (model tankog sloja i Tomas&Skansi model) kinetike konvektivnog sušenja, uzorka oblika pločice. Ispitivanje je izvršeno u laboratorijskoj recirkulacionoj sušnici u temperaturnom opsegu od 40 do 70ºC. Parametri modela su dobijeni aproksimacijom eksperimentalnih rezultata. Takođe su analizirani uticaji uslova sušenja na parametre matematičkih modela., In this work, were examined the applicability of two conventional mathematical model (thinlayer equation and Tomas&Skansi model) for convective drying of clay slab. The research was made in laboratory dryer for temperature 40 to 70ºC. Parameters of the selected mathematical models are estimated by fitting them to experimental data. The influences of process conditions on model parameters were also analyzed.",
publisher = "Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd",
journal = "Izgradnja",
title = "Analiza matematičkih modela sušenja opekarskih sirovina, Mathematical model analysis of brick raw materials doping",
pages = "174-170",
number = "7-9",
volume = "59",
url = "https://hdl.handle.net/21.15107/rcub_rims_41"
}

Lalić, Ž., Radojević, Z.,& Vasić, R.. (2005). Analiza matematičkih modela sušenja opekarskih sirovina. in Izgradnja
Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd., 59(7-9), 170-174.
https://hdl.handle.net/21.15107/rcub_rims_41

Lalić Ž, Radojević Z, Vasić R. Analiza matematičkih modela sušenja opekarskih sirovina. in Izgradnja. 2005;59(7-9):170-174.
https://hdl.handle.net/21.15107/rcub_rims_41 .

Lalić, Željko, Radojević, Zagorka, Vasić, Radomir, "Analiza matematičkih modela sušenja opekarskih sirovina" in Izgradnja, 59, no. 7-9 (2005):170-174,
https://hdl.handle.net/21.15107/rcub_rims_41 .

TY  - JOUR
AU  - Radojević, Zagorka
AU  - Lalić, Željko
AU  - Vasić, Radomir
AU  - Mitrović, Aleksandra
PY  - 2005
UR  - http://rims.institutims.rs/handle/123456789/40
AB  - Kvalitet opekarskih sirovina u Srbiji varira u širokom opsegu u pogledu hemijskih, mineraloških, granulometrijskih i keramičko-tehnoloških karakteristika. Opekarske sirovine se mogu razvrstati u nekoliko osnovnih tipova i svaki tip ima odgovarajuće prednosti i ograničenja u primeni za proizvodnju određenih proizvoda i asortimana. U ovom radu daju se karakteristike lesnih sedimenata. Analiziran je uticaj kvaliteta lesnih sedimanata na kvalitet opekarskih proizvoda i na tehnološke parametre procesa proizvodnje.
AB  - The quality of the brick raw materials in Serbia varies due theirs chemical, mineralogical, grain size characteristics, as well as technological properties. Brick raw materials may be classified in a few main types. For their application in the production of a certain product and assortment very main type has some advantages and limits. In this work we presents characteristics of loess sediments and their influence on production process and quality of the brick product.
PB  - Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd
T2  - Izgradnja
T1  - Kvalitet opekarskih sirovina u Srbiji i uticaj na kvalitet proizvoda i tehnologiju proizvodnje lesni sedimenti
T1  - Brick raw materials quality in Serbia and the influence for the products quality and to the production technology - loess sediments
EP  - 49
IS  - 7-9
SP  - 45
VL  - 59
UR  - https://hdl.handle.net/21.15107/rcub_rims_40
ER  - 

@article{
author = "Radojević, Zagorka and Lalić, Željko and Vasić, Radomir and Mitrović, Aleksandra",
year = "2005",
abstract = "Kvalitet opekarskih sirovina u Srbiji varira u širokom opsegu u pogledu hemijskih, mineraloških, granulometrijskih i keramičko-tehnoloških karakteristika. Opekarske sirovine se mogu razvrstati u nekoliko osnovnih tipova i svaki tip ima odgovarajuće prednosti i ograničenja u primeni za proizvodnju određenih proizvoda i asortimana. U ovom radu daju se karakteristike lesnih sedimenata. Analiziran je uticaj kvaliteta lesnih sedimanata na kvalitet opekarskih proizvoda i na tehnološke parametre procesa proizvodnje., The quality of the brick raw materials in Serbia varies due theirs chemical, mineralogical, grain size characteristics, as well as technological properties. Brick raw materials may be classified in a few main types. For their application in the production of a certain product and assortment very main type has some advantages and limits. In this work we presents characteristics of loess sediments and their influence on production process and quality of the brick product.",
publisher = "Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd",
journal = "Izgradnja",
title = "Kvalitet opekarskih sirovina u Srbiji i uticaj na kvalitet proizvoda i tehnologiju proizvodnje lesni sedimenti, Brick raw materials quality in Serbia and the influence for the products quality and to the production technology - loess sediments",
pages = "49-45",
number = "7-9",
volume = "59",
url = "https://hdl.handle.net/21.15107/rcub_rims_40"
}

Radojević, Z., Lalić, Ž., Vasić, R.,& Mitrović, A.. (2005). Kvalitet opekarskih sirovina u Srbiji i uticaj na kvalitet proizvoda i tehnologiju proizvodnje lesni sedimenti. in Izgradnja
Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd., 59(7-9), 45-49.
https://hdl.handle.net/21.15107/rcub_rims_40

Radojević Z, Lalić Ž, Vasić R, Mitrović A. Kvalitet opekarskih sirovina u Srbiji i uticaj na kvalitet proizvoda i tehnologiju proizvodnje lesni sedimenti. in Izgradnja. 2005;59(7-9):45-49.
https://hdl.handle.net/21.15107/rcub_rims_40 .

Radojević, Zagorka, Lalić, Željko, Vasić, Radomir, Mitrović, Aleksandra, "Kvalitet opekarskih sirovina u Srbiji i uticaj na kvalitet proizvoda i tehnologiju proizvodnje lesni sedimenti" in Izgradnja, 59, no. 7-9 (2005):45-49,
https://hdl.handle.net/21.15107/rcub_rims_40 .

TY  - JOUR
AU  - Radojević, Zagorka
AU  - Vasić, Radomir
AU  - Lalić, Željko
PY  - 2005
UR  - http://rims.institutims.rs/handle/123456789/48
AB  - Pri površinskoj eksploataciji uglja u PK 'Kostolac' odlažu se velike količine pratećih mineralnih sirovina: les, lesoidne gline, plastične gline, pesak i ugljene prašine. Sagorevanjem uglja u termoelektrani kao tehnogena sirovina se pojavljuje i elektrofilterski pepeo. U ovom radu prikazani su laboratorijski rezultati istraživanja u cilju definisanja optimalne sirovinske mešavine za proizvodnju poroziranih šupljih blokova od gline. Takvi proizvodi imaju malu zapreminsku masu i bolja termoizolaciona svojstva, a u samom postupku pečenja se ostvaruju odgovarajuće uštede u energentima. Na taj način, dobio bi se kvalitetan proizvod na bazi otpadnih materijala, čime bi se smanjilo i ekološko zagađivanje čovekove okoline.
AB  - Surface exploitation of coal in deposit 'Kostolac', form a large amount of secondary mineral raw materials: loess, loess clay, plastic clay, sand and coal dust. Coal burning in thermoelectric power plant made fly ash, a waste raw material. The paper describes the result of laboratory test with aim to define optimum raw material composites for production porous hollow clay blocks. Porous block have less volume mass, better thermo insulation properties, and in the firing process saving of emergent have been achieved. In such way, we get a good quality building product from waste materials, and it would reduce ecology pollution of human surrounds.
PB  - Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd
T2  - Izgradnja
T1  - Istraživanje mogućnosti proizvodnje poroziranih blokova na bazi pratećih sedimenata i sekundarnih sirovina TE 'Kostolac'
T1  - Research possibilities to production porous hollow block from secondary raw materials 'Kostolac'
EP  - 169
IS  - 7-9
SP  - 166
VL  - 59
UR  - https://hdl.handle.net/21.15107/rcub_rims_48
ER  - 

@article{
author = "Radojević, Zagorka and Vasić, Radomir and Lalić, Željko",
year = "2005",
abstract = "Pri površinskoj eksploataciji uglja u PK 'Kostolac' odlažu se velike količine pratećih mineralnih sirovina: les, lesoidne gline, plastične gline, pesak i ugljene prašine. Sagorevanjem uglja u termoelektrani kao tehnogena sirovina se pojavljuje i elektrofilterski pepeo. U ovom radu prikazani su laboratorijski rezultati istraživanja u cilju definisanja optimalne sirovinske mešavine za proizvodnju poroziranih šupljih blokova od gline. Takvi proizvodi imaju malu zapreminsku masu i bolja termoizolaciona svojstva, a u samom postupku pečenja se ostvaruju odgovarajuće uštede u energentima. Na taj način, dobio bi se kvalitetan proizvod na bazi otpadnih materijala, čime bi se smanjilo i ekološko zagađivanje čovekove okoline., Surface exploitation of coal in deposit 'Kostolac', form a large amount of secondary mineral raw materials: loess, loess clay, plastic clay, sand and coal dust. Coal burning in thermoelectric power plant made fly ash, a waste raw material. The paper describes the result of laboratory test with aim to define optimum raw material composites for production porous hollow clay blocks. Porous block have less volume mass, better thermo insulation properties, and in the firing process saving of emergent have been achieved. In such way, we get a good quality building product from waste materials, and it would reduce ecology pollution of human surrounds.",
publisher = "Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd",
journal = "Izgradnja",
title = "Istraživanje mogućnosti proizvodnje poroziranih blokova na bazi pratećih sedimenata i sekundarnih sirovina TE 'Kostolac', Research possibilities to production porous hollow block from secondary raw materials 'Kostolac'",
pages = "169-166",
number = "7-9",
volume = "59",
url = "https://hdl.handle.net/21.15107/rcub_rims_48"
}

Radojević, Z., Vasić, R.,& Lalić, Ž.. (2005). Istraživanje mogućnosti proizvodnje poroziranih blokova na bazi pratećih sedimenata i sekundarnih sirovina TE 'Kostolac'. in Izgradnja
Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd., 59(7-9), 166-169.
https://hdl.handle.net/21.15107/rcub_rims_48

Radojević Z, Vasić R, Lalić Ž. Istraživanje mogućnosti proizvodnje poroziranih blokova na bazi pratećih sedimenata i sekundarnih sirovina TE 'Kostolac'. in Izgradnja. 2005;59(7-9):166-169.
https://hdl.handle.net/21.15107/rcub_rims_48 .

Radojević, Zagorka, Vasić, Radomir, Lalić, Željko, "Istraživanje mogućnosti proizvodnje poroziranih blokova na bazi pratećih sedimenata i sekundarnih sirovina TE 'Kostolac'" in Izgradnja, 59, no. 7-9 (2005):166-169,
https://hdl.handle.net/21.15107/rcub_rims_48 .