TY  - CONF
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Mitić, Vojislav
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/148
AB  - Aim of this paper is to establish the correlation between sintering process, porosity and important thermo-mechanical property of refractory concrete, i.e. creep. Creep deformation was investigated according to standard laboratory procedure applied at three temperatures: 1200, 1300 and 1400 degrees C. Corundum and bauxite based refractory concretes were investigated. The concretes are varying in chemical and mineralogical composition. Both loss of strength and degradation of material occur when refractory concrete is subjected to increased temperature and compressive static load. Measuring of thermo-mechanical properties can indicate and monitor the changes within microstructure. Variation of refractory concrete microstructure, as a consequence of sintering process, during exposure to constant compressive load and constant elevated temperature during certain time-intervals was investigated using scanning electron microscope and Image Pro Plus program for image analysis. Obtained results of the investigation proved that creep can be useful method when type of refractory concrete is to be chosen for an application.
PB  - American Ceramic Society
C3  - Mechanical Properties and Performance of Engineering Ceramics and Composites Vi
T1  - Determination of apparent porosity level of refractory concrete using ultrasonic pulse velocity technique and image analysis
EP  - 161
IS  - 2
SP  - 151
VL  - 32
UR  - https://hdl.handle.net/21.15107/rcub_rims_148
ER  - 

@conference{
author = "Terzić, Anja and Pavlović, Ljubica and Mitić, Vojislav",
year = "2011",
abstract = "Aim of this paper is to establish the correlation between sintering process, porosity and important thermo-mechanical property of refractory concrete, i.e. creep. Creep deformation was investigated according to standard laboratory procedure applied at three temperatures: 1200, 1300 and 1400 degrees C. Corundum and bauxite based refractory concretes were investigated. The concretes are varying in chemical and mineralogical composition. Both loss of strength and degradation of material occur when refractory concrete is subjected to increased temperature and compressive static load. Measuring of thermo-mechanical properties can indicate and monitor the changes within microstructure. Variation of refractory concrete microstructure, as a consequence of sintering process, during exposure to constant compressive load and constant elevated temperature during certain time-intervals was investigated using scanning electron microscope and Image Pro Plus program for image analysis. Obtained results of the investigation proved that creep can be useful method when type of refractory concrete is to be chosen for an application.",
publisher = "American Ceramic Society",
journal = "Mechanical Properties and Performance of Engineering Ceramics and Composites Vi",
title = "Determination of apparent porosity level of refractory concrete using ultrasonic pulse velocity technique and image analysis",
pages = "161-151",
number = "2",
volume = "32",
url = "https://hdl.handle.net/21.15107/rcub_rims_148"
}

Terzić, A., Pavlović, L.,& Mitić, V.. (2011). Determination of apparent porosity level of refractory concrete using ultrasonic pulse velocity technique and image analysis. in Mechanical Properties and Performance of Engineering Ceramics and Composites Vi
American Ceramic Society., 32(2), 151-161.
https://hdl.handle.net/21.15107/rcub_rims_148

Terzić A, Pavlović L, Mitić V. Determination of apparent porosity level of refractory concrete using ultrasonic pulse velocity technique and image analysis. in Mechanical Properties and Performance of Engineering Ceramics and Composites Vi. 2011;32(2):151-161.
https://hdl.handle.net/21.15107/rcub_rims_148 .

Terzić, Anja, Pavlović, Ljubica, Mitić, Vojislav, "Determination of apparent porosity level of refractory concrete using ultrasonic pulse velocity technique and image analysis" in Mechanical Properties and Performance of Engineering Ceramics and Composites Vi, 32, no. 2 (2011):151-161,
https://hdl.handle.net/21.15107/rcub_rims_148 .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/115
AB  - Concrete which undergoes a thermal treatment before (pre-casted concrete blocks) and during (concrete embedded in-situ) its life-service can be applied in plants operating at high temperature and as thermal insulation. Sintering is a process which occurs within a concrete structure in such conditions. Progression of sintering process can be monitored by the change of the porosity parameters determined with a nondestructive test method - ultrasonic pulse velocity and computer program for image analysis. The experiment has been performed on the samples of corundum and bauxite concrete composites. The apparent porosity of the samples thermally treated at 110, 800, 1000, 1300 and 1500 degrees C was primary investigated with a standard laboratory procedure. Sintering parameters were calculated from the creep testing. The loss of strength and material degradation occurred in concrete when it was subjected to the increased temperature and a compressive load. Mechanical properties indicate and monitor changes within microstructure. The level of surface deterioration after the thermal treatment was determined using Image Pro Plus program. Mechanical strength was estimated using ultrasonic pulse velocity testing Nondestructive ultrasonic measurement was used as a qualitative description of the porosity change in specimens which is the result of the sintering process. The ultrasonic pulse velocity technique and image analysis proved to be reliable methods for monitoring of micro-structural change during the thermal treatment and service life of refractory concrete.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis
EP  - 87
IS  - 1
SP  - 79
VL  - 16
DO  - 10.2298/CICEQ1000012T
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica",
year = "2010",
abstract = "Concrete which undergoes a thermal treatment before (pre-casted concrete blocks) and during (concrete embedded in-situ) its life-service can be applied in plants operating at high temperature and as thermal insulation. Sintering is a process which occurs within a concrete structure in such conditions. Progression of sintering process can be monitored by the change of the porosity parameters determined with a nondestructive test method - ultrasonic pulse velocity and computer program for image analysis. The experiment has been performed on the samples of corundum and bauxite concrete composites. The apparent porosity of the samples thermally treated at 110, 800, 1000, 1300 and 1500 degrees C was primary investigated with a standard laboratory procedure. Sintering parameters were calculated from the creep testing. The loss of strength and material degradation occurred in concrete when it was subjected to the increased temperature and a compressive load. Mechanical properties indicate and monitor changes within microstructure. The level of surface deterioration after the thermal treatment was determined using Image Pro Plus program. Mechanical strength was estimated using ultrasonic pulse velocity testing Nondestructive ultrasonic measurement was used as a qualitative description of the porosity change in specimens which is the result of the sintering process. The ultrasonic pulse velocity technique and image analysis proved to be reliable methods for monitoring of micro-structural change during the thermal treatment and service life of refractory concrete.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis",
pages = "87-79",
number = "1",
volume = "16",
doi = "10.2298/CICEQ1000012T"
}

Terzić, A.,& Pavlović, L.. (2010). Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis. in Chemical Industry and Chemical Engineering Quarterly / CICEQ
Savez hemijskih inženjera, Beograd., 16(1), 79-87.
https://doi.org/10.2298/CICEQ1000012T

Terzić A, Pavlović L. Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2010;16(1):79-87.
doi:10.2298/CICEQ1000012T .

Terzić, Anja, Pavlović, Ljubica, "Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 16, no. 1 (2010):79-87,
https://doi.org/10.2298/CICEQ1000012T . .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/122
AB  - The aim of this investigation is to establish the correlation between concrete porosity, compressive mechanical strength, and microstructure using the results of nondestructive testing methods, i.e., ultrasonic pulse velocity (UPV) and image analysis. Researchers and engineers usually use results of standard laboratory procedures in order to obtain mechanical properties of a material. That process is long and it requires large number of samples, i.e., a lot of time and lot of material. Image Pro Plus (IPP) and UPV are methods which can provide equally accurate results. These methods are much more simple, rapid, and cheaper. Nondestructive test methods were applied on the corundum and bauxite based refractory concretes. Investigated concretes are varying in chemical and mineralogical composition. Mechanical compressive strength of concrete samples after thermal treatment at various temperatures (110, 800, 1,000, 1,300, and 1,500 degrees C) was investigated using standard laboratory procedure and afterward with UPV technique. Loss of strength and degradation occurs when refractory concrete sample is subjected to increased temperature and compressive load; therefore, measurement of mechanical properties can indicate and monitor the changes in the microstructure. Level of surface deterioration after thermal treatment was determined using optical microscope and IPP. Nondestructive ultrasonic measurement was also used as a means of monitoring of increasing porosity in refractory specimens. UPV technique and image analysis are reliable nondestructive methods for characterization of microstructural defects and can be useful when type of refractory concrete is to be chosen for an application.
PB  - ASCE - American Society of Civil Engineers
T2  - Journal of Materials in Civil Engineering
T1  - Application of Results of Nondestructive Testing Methods in the Investigation of Microstructure of Refractory Concretes
EP  - 857
IS  - 9
SP  - 853
VL  - 22
DO  - 10.1061/(ASCE)MT.1943-5533.0000083
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica",
year = "2010",
abstract = "The aim of this investigation is to establish the correlation between concrete porosity, compressive mechanical strength, and microstructure using the results of nondestructive testing methods, i.e., ultrasonic pulse velocity (UPV) and image analysis. Researchers and engineers usually use results of standard laboratory procedures in order to obtain mechanical properties of a material. That process is long and it requires large number of samples, i.e., a lot of time and lot of material. Image Pro Plus (IPP) and UPV are methods which can provide equally accurate results. These methods are much more simple, rapid, and cheaper. Nondestructive test methods were applied on the corundum and bauxite based refractory concretes. Investigated concretes are varying in chemical and mineralogical composition. Mechanical compressive strength of concrete samples after thermal treatment at various temperatures (110, 800, 1,000, 1,300, and 1,500 degrees C) was investigated using standard laboratory procedure and afterward with UPV technique. Loss of strength and degradation occurs when refractory concrete sample is subjected to increased temperature and compressive load; therefore, measurement of mechanical properties can indicate and monitor the changes in the microstructure. Level of surface deterioration after thermal treatment was determined using optical microscope and IPP. Nondestructive ultrasonic measurement was also used as a means of monitoring of increasing porosity in refractory specimens. UPV technique and image analysis are reliable nondestructive methods for characterization of microstructural defects and can be useful when type of refractory concrete is to be chosen for an application.",
publisher = "ASCE - American Society of Civil Engineers",
journal = "Journal of Materials in Civil Engineering",
title = "Application of Results of Nondestructive Testing Methods in the Investigation of Microstructure of Refractory Concretes",
pages = "857-853",
number = "9",
volume = "22",
doi = "10.1061/(ASCE)MT.1943-5533.0000083"
}

Terzić, A.,& Pavlović, L.. (2010). Application of Results of Nondestructive Testing Methods in the Investigation of Microstructure of Refractory Concretes. in Journal of Materials in Civil Engineering
ASCE - American Society of Civil Engineers., 22(9), 853-857.
https://doi.org/10.1061/(ASCE)MT.1943-5533.0000083

Terzić A, Pavlović L. Application of Results of Nondestructive Testing Methods in the Investigation of Microstructure of Refractory Concretes. in Journal of Materials in Civil Engineering. 2010;22(9):853-857.
doi:10.1061/(ASCE)MT.1943-5533.0000083 .

Terzić, Anja, Pavlović, Ljubica, "Application of Results of Nondestructive Testing Methods in the Investigation of Microstructure of Refractory Concretes" in Journal of Materials in Civil Engineering, 22, no. 9 (2010):853-857,
https://doi.org/10.1061/(ASCE)MT.1943-5533.0000083 . .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
PY  - 2009
UR  - http://rims.institutims.rs/handle/123456789/532
T2  - Materijali i konstrukcije
T1  - Primena mikroskopskih metoda u analizi mikrostrukture različitih tipova betona sa recikliranim agregatom
EP  - 39
SP  - 34
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rims_532
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica",
year = "2009",
journal = "Materijali i konstrukcije",
title = "Primena mikroskopskih metoda u analizi mikrostrukture različitih tipova betona sa recikliranim agregatom",
pages = "39-34",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_rims_532"
}

Terzić, A.,& Pavlović, L.. (2009). Primena mikroskopskih metoda u analizi mikrostrukture različitih tipova betona sa recikliranim agregatom. in Materijali i konstrukcije, 1, 34-39.
https://hdl.handle.net/21.15107/rcub_rims_532

Terzić A, Pavlović L. Primena mikroskopskih metoda u analizi mikrostrukture različitih tipova betona sa recikliranim agregatom. in Materijali i konstrukcije. 2009;1:34-39.
https://hdl.handle.net/21.15107/rcub_rims_532 .

Terzić, Anja, Pavlović, Ljubica, "Primena mikroskopskih metoda u analizi mikrostrukture različitih tipova betona sa recikliranim agregatom" in Materijali i konstrukcije, 1 (2009):34-39,
https://hdl.handle.net/21.15107/rcub_rims_532 .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
PY  - 2009
UR  - http://rims.institutims.rs/handle/123456789/99
AB  - The aim of this paper is to establish the correlation among sintering process, porosity, and important thermo-mechanical property of refractory concrete, i.e., creep. Creep deformation was investigated according to the standard laboratory procedure applied at three temperatures: 1200, 1300, and 1400 A degrees C. Corundum and bauxite-based refractory concretes were investigated. The concretes are varying in chemical and mineralogical composition. Both loss of strength and degradation of material occur when refractory concrete is subjected to increased temperature and compressive static load. Measuring of thermo-mechanical properties can indicate and monitor the changes within microstructure. Variation of refractory concrete microstructure, as a consequence of sintering process, during exposure to constant compressive load and constant elevated temperature during certain time-intervals was investigated using scanning electron microscope and Image Pro Plus program for image analysis. Obtained results of the investigation proved that creep can be useful method when type of refractory concrete is to be chosen for an application.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Correlation among sintering process, porosity, and creep deformation of refractory concrete
EP  - 2850
IS  - 11
SP  - 2844
VL  - 44
DO  - 10.1007/s10853-009-3376-0
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica",
year = "2009",
abstract = "The aim of this paper is to establish the correlation among sintering process, porosity, and important thermo-mechanical property of refractory concrete, i.e., creep. Creep deformation was investigated according to the standard laboratory procedure applied at three temperatures: 1200, 1300, and 1400 A degrees C. Corundum and bauxite-based refractory concretes were investigated. The concretes are varying in chemical and mineralogical composition. Both loss of strength and degradation of material occur when refractory concrete is subjected to increased temperature and compressive static load. Measuring of thermo-mechanical properties can indicate and monitor the changes within microstructure. Variation of refractory concrete microstructure, as a consequence of sintering process, during exposure to constant compressive load and constant elevated temperature during certain time-intervals was investigated using scanning electron microscope and Image Pro Plus program for image analysis. Obtained results of the investigation proved that creep can be useful method when type of refractory concrete is to be chosen for an application.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Correlation among sintering process, porosity, and creep deformation of refractory concrete",
pages = "2850-2844",
number = "11",
volume = "44",
doi = "10.1007/s10853-009-3376-0"
}

Terzić, A.,& Pavlović, L.. (2009). Correlation among sintering process, porosity, and creep deformation of refractory concrete. in Journal of Materials Science
Springer, New York., 44(11), 2844-2850.
https://doi.org/10.1007/s10853-009-3376-0

Terzić A, Pavlović L. Correlation among sintering process, porosity, and creep deformation of refractory concrete. in Journal of Materials Science. 2009;44(11):2844-2850.
doi:10.1007/s10853-009-3376-0 .

Terzić, Anja, Pavlović, Ljubica, "Correlation among sintering process, porosity, and creep deformation of refractory concrete" in Journal of Materials Science, 44, no. 11 (2009):2844-2850,
https://doi.org/10.1007/s10853-009-3376-0 . .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Radojević, Zagorka
PY  - 2009
UR  - http://rims.institutims.rs/handle/123456789/91
AB  - Cilj ovog rada je da se utvrdi veza između važnih mehaničkih svojstava i karakteristika mikrostrukture pomoću nedestruktivne ispitne metode - metode merenja berzine ultrazvuka, na uzorcima korundnih i boksitnih vatrostalnih betona. Ispitivani betoni se razlikuju po hemijskom i mineraloškom sastavu. Standardnom destruktivnom laboratorijskom metodom je određena mehanička čvrstoća pri pritisku na uzorcima koji su bili prethodno izloženi termičkom tretmanu na temperaturama: 110, 800, 1000, 1300 i 1500°C. Kada je uzorak vatrostalnog betona izložen uticaju povišene temperature i statičkog opterećenja dolazi do smanjenja pritisne čvrstoće i do sveukupne degradacije materijala (gustina i elastčna svojstva se smanjuju). Određivanjem mehaničkih svojstava betona može se ukazati ili se mogu pratiti promene koje se dešavaju unutar mikrostrukture materijala. Nivo površinske degradacije uzorka, nakon termičkih tretmana, je utvrđen pomoću optičkog mikroskopa i Image Pro Plus - kompjuterskog programa za analizu slike. Nedestuktivna metoda merenja brzine ultrazvuka je primenjena pri praćenju promene poroznosti unutar uzoraka vatrostalnog betona. Ultrazvučna metoda i analiza slike su pouzdane metode za karakterizaciju mikrostukturnih promena i defekata i veoma su korisne kada je potrebno utvrditi koji je tip vatrostalnog betona najpogodniji za određenu primenu.
AB  - Aim of this paper is to establish the correlation between important mechanical properties and characteristics of microstructure using non-destructive testing method, i.e. ultrasonic pulse velocity, on the example of corundum and bauxite based refractory concretes. Investigated concretes are varying in chemical and mineralogical composition. Mechanical compressive strength of concrete samples after thermal treatment at various temperatures (110, 800, 1000, 1300 and 1500°C) was investigated using standard laboratory procedure. When refractory concrete sample is subjected to increased temperature and compressive load loss of strength and material degradation occurs (density and elastic properties of material are decreasing). Measurement of mechanical properties can indicate and monitor the changes in the microstructure. Level of surface deterioration after thermal treatment was determined using optical microscope and Image Pro Plus - program for image analysis. Nondestructive ultrasonic measurement was used as a means of monitoring of increasing porosity in refractory specimens. Ultrasonic pulse velocity technique and image analysis are reliable non-destructive methods for characterization of micro-structural defects and can be useful when type of refractory concrete is to be chosen for an application.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Materijali i konstrukcije
T1  - Veza između mehaničkih svojstava i mikrostrukture vatrostalnih kompozita određena nedestruktivnim metodama ispitivanja
T1  - Correlation between mechanical properties and microstructure of refractory composites determined using non-destructive testing method
EP  - 46
IS  - 3-4
SP  - 35
VL  - 52
UR  - https://hdl.handle.net/21.15107/rcub_rims_91
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica and Radojević, Zagorka",
year = "2009",
abstract = "Cilj ovog rada je da se utvrdi veza između važnih mehaničkih svojstava i karakteristika mikrostrukture pomoću nedestruktivne ispitne metode - metode merenja berzine ultrazvuka, na uzorcima korundnih i boksitnih vatrostalnih betona. Ispitivani betoni se razlikuju po hemijskom i mineraloškom sastavu. Standardnom destruktivnom laboratorijskom metodom je određena mehanička čvrstoća pri pritisku na uzorcima koji su bili prethodno izloženi termičkom tretmanu na temperaturama: 110, 800, 1000, 1300 i 1500°C. Kada je uzorak vatrostalnog betona izložen uticaju povišene temperature i statičkog opterećenja dolazi do smanjenja pritisne čvrstoće i do sveukupne degradacije materijala (gustina i elastčna svojstva se smanjuju). Određivanjem mehaničkih svojstava betona može se ukazati ili se mogu pratiti promene koje se dešavaju unutar mikrostrukture materijala. Nivo površinske degradacije uzorka, nakon termičkih tretmana, je utvrđen pomoću optičkog mikroskopa i Image Pro Plus - kompjuterskog programa za analizu slike. Nedestuktivna metoda merenja brzine ultrazvuka je primenjena pri praćenju promene poroznosti unutar uzoraka vatrostalnog betona. Ultrazvučna metoda i analiza slike su pouzdane metode za karakterizaciju mikrostukturnih promena i defekata i veoma su korisne kada je potrebno utvrditi koji je tip vatrostalnog betona najpogodniji za određenu primenu., Aim of this paper is to establish the correlation between important mechanical properties and characteristics of microstructure using non-destructive testing method, i.e. ultrasonic pulse velocity, on the example of corundum and bauxite based refractory concretes. Investigated concretes are varying in chemical and mineralogical composition. Mechanical compressive strength of concrete samples after thermal treatment at various temperatures (110, 800, 1000, 1300 and 1500°C) was investigated using standard laboratory procedure. When refractory concrete sample is subjected to increased temperature and compressive load loss of strength and material degradation occurs (density and elastic properties of material are decreasing). Measurement of mechanical properties can indicate and monitor the changes in the microstructure. Level of surface deterioration after thermal treatment was determined using optical microscope and Image Pro Plus - program for image analysis. Nondestructive ultrasonic measurement was used as a means of monitoring of increasing porosity in refractory specimens. Ultrasonic pulse velocity technique and image analysis are reliable non-destructive methods for characterization of micro-structural defects and can be useful when type of refractory concrete is to be chosen for an application.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Materijali i konstrukcije",
title = "Veza između mehaničkih svojstava i mikrostrukture vatrostalnih kompozita određena nedestruktivnim metodama ispitivanja, Correlation between mechanical properties and microstructure of refractory composites determined using non-destructive testing method",
pages = "46-35",
number = "3-4",
volume = "52",
url = "https://hdl.handle.net/21.15107/rcub_rims_91"
}

Terzić, A., Pavlović, L.,& Radojević, Z.. (2009). Veza između mehaničkih svojstava i mikrostrukture vatrostalnih kompozita određena nedestruktivnim metodama ispitivanja. in Materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 52(3-4), 35-46.
https://hdl.handle.net/21.15107/rcub_rims_91

Terzić A, Pavlović L, Radojević Z. Veza između mehaničkih svojstava i mikrostrukture vatrostalnih kompozita određena nedestruktivnim metodama ispitivanja. in Materijali i konstrukcije. 2009;52(3-4):35-46.
https://hdl.handle.net/21.15107/rcub_rims_91 .

Terzić, Anja, Pavlović, Ljubica, Radojević, Zagorka, "Veza između mehaničkih svojstava i mikrostrukture vatrostalnih kompozita određena nedestruktivnim metodama ispitivanja" in Materijali i konstrukcije, 52, no. 3-4 (2009):35-46,
https://hdl.handle.net/21.15107/rcub_rims_91 .