TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Radojević, Zagorka
AU  - Pavlović, Vladimir B.
AU  - Mitić, Vojislav V.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/3541
AB  - In this study, the feasibility of using fly ash to manufacture high-temperature mortars was investigated. The investigation was set to define preliminary characteristics of new types of mortars based on ordinary and/or refractory cement with fly ash addition, and to establish mutual correlation between thermally induced changes of mineral phases, microstructure, and final performances of the mortars. New mortars, made up of 21% cement (PC-CEM I 42.5R/HAC-Secar 70/71), 70% river sand, and 9% fly ash, were chemically, physically, and mechanically characterized to determine possibilities of fly ash re-utilization for high-temperature purposes. The fly ash samples, which originated from four different power plants, were mechanically activated. Mortars were heat-treated up to 1300°C in a laboratory tunnel furnace with retention time 2 h. Thermal stability of crystalline phases were studied by differential thermal analysis (DTA); thermally induced changes in mineral phase composition were analyzed by XRD; and microstructure were investigated by scanning electron microscopy. Correlated results of DTA, XRD, and SEM analyses indicated initiation of sintering processes at approximately 1300°C and formation of thermally stable minerals (rankinite, gehlenite, anorthite, cristobalite). The investigation highlights a sustainable approach of using fly ash in developing ecofriendly mortars for high-temperature application. © 2013 The American Ceramic Society.
PB  - Hoboken, NJ : John Wiley & Sons
T2  - International Journal of Applied Ceramic Technology
T1  - Novel utilization of fly ash for high-temperature mortars: Phase composition, microstructure and performances correlation
SP  - 133
EP  - 146
VL  - 12
IS  - 1
DO  - 10.1111/ijac.12135
UR  - https://hdl.handle.net/21.15107/rcub_dais_3541
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica and Radojević, Zagorka and Pavlović, Vladimir B. and Mitić, Vojislav V.",
year = "2015",
abstract = "In this study, the feasibility of using fly ash to manufacture high-temperature mortars was investigated. The investigation was set to define preliminary characteristics of new types of mortars based on ordinary and/or refractory cement with fly ash addition, and to establish mutual correlation between thermally induced changes of mineral phases, microstructure, and final performances of the mortars. New mortars, made up of 21% cement (PC-CEM I 42.5R/HAC-Secar 70/71), 70% river sand, and 9% fly ash, were chemically, physically, and mechanically characterized to determine possibilities of fly ash re-utilization for high-temperature purposes. The fly ash samples, which originated from four different power plants, were mechanically activated. Mortars were heat-treated up to 1300°C in a laboratory tunnel furnace with retention time 2 h. Thermal stability of crystalline phases were studied by differential thermal analysis (DTA); thermally induced changes in mineral phase composition were analyzed by XRD; and microstructure were investigated by scanning electron microscopy. Correlated results of DTA, XRD, and SEM analyses indicated initiation of sintering processes at approximately 1300°C and formation of thermally stable minerals (rankinite, gehlenite, anorthite, cristobalite). The investigation highlights a sustainable approach of using fly ash in developing ecofriendly mortars for high-temperature application. © 2013 The American Ceramic Society.",
publisher = "Hoboken, NJ : John Wiley & Sons",
journal = "International Journal of Applied Ceramic Technology",
title = "Novel utilization of fly ash for high-temperature mortars: Phase composition, microstructure and performances correlation",
pages = "133-146",
volume = "12",
number = "1",
doi = "10.1111/ijac.12135",
url = "https://hdl.handle.net/21.15107/rcub_dais_3541"
}

Terzić, A., Pavlović, L., Radojević, Z., Pavlović, V. B.,& Mitić, V. V.. (2015). Novel utilization of fly ash for high-temperature mortars: Phase composition, microstructure and performances correlation. in International Journal of Applied Ceramic Technology
Hoboken, NJ : John Wiley & Sons., 12(1), 133-146.
https://doi.org/10.1111/ijac.12135
https://hdl.handle.net/21.15107/rcub_dais_3541

Terzić A, Pavlović L, Radojević Z, Pavlović VB, Mitić VV. Novel utilization of fly ash for high-temperature mortars: Phase composition, microstructure and performances correlation. in International Journal of Applied Ceramic Technology. 2015;12(1):133-146.
doi:10.1111/ijac.12135
https://hdl.handle.net/21.15107/rcub_dais_3541 .

Terzić, Anja, Pavlović, Ljubica, Radojević, Zagorka, Pavlović, Vladimir B., Mitić, Vojislav V., "Novel utilization of fly ash for high-temperature mortars: Phase composition, microstructure and performances correlation" in International Journal of Applied Ceramic Technology, 12, no. 1 (2015):133-146,
https://doi.org/10.1111/ijac.12135 .,
https://hdl.handle.net/21.15107/rcub_dais_3541 .

TY  - CONF
AU  - Terzić, Anja
AU  - Radojević, Zagorka
AU  - Miličić, Ljiljana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Pavlović, Ljubica
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/413
AB  - As coal combustion byproduct fly ash represents a risk for environment: direct ash emission from open land-fills causes pollution of air, soil and water. The solution for this severe pollution problem is fly ash reapplication in various construction ceramic composite materials. Although pelletization of waste powdery material is a known technique in the production of artificial aggregates, it still has not been widely used in construction sector. Here investigated cold-bonded fly ash aggregate was produced in semi-industrial pelletizing device. The fly ash particles were bonded with water-glass (Sodium silicate - Na2SiO3) and used as substitution for aggregate in Portland cement based composite. Half of the produced lightweight aggregate was submitted to thermal treatment and afterwards applied in the construction composite in the same ration as in the case of cold-bonded pellets. The performance characteristics of two types of lightweight composites were mutually compared and afterwards correlated with characteristics of normal-weight concrete. Compressive strength, modulus of elasticity and tensile strength were used as represents of the composites mechanical behavior. Mineral constituents of fly ash pellets were analyzed by means of X-ray diffraction analysis, differential thermal analysis was applied in crystalline phase investigation, and scanning electron microscopy in microstructural analysis. The leaching behavior and environmental impact of hazardous elements were also analyzed. It was concluded that content of potentially toxic elements found in leachate of fly-ash based composites was far below tolerance limit proposed by actual standards for the building materials, characterizing the fly ash non-harmful secondary raw material and enabling its reapplication in building materials industry. Utilizing fly ash to produce quality aggregates should yield significant environmental benefits.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Lightweight construction ceramic composites based of pelletized fly ash aggregate
SP  - 32
EP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_dais_413
ER  - 

@conference{
author = "Terzić, Anja and Radojević, Zagorka and Miličić, Ljiljana and Obradović, Nina and Pavlović, Vladimir B. and Pavlović, Ljubica",
year = "2013",
abstract = "As coal combustion byproduct fly ash represents a risk for environment: direct ash emission from open land-fills causes pollution of air, soil and water. The solution for this severe pollution problem is fly ash reapplication in various construction ceramic composite materials. Although pelletization of waste powdery material is a known technique in the production of artificial aggregates, it still has not been widely used in construction sector. Here investigated cold-bonded fly ash aggregate was produced in semi-industrial pelletizing device. The fly ash particles were bonded with water-glass (Sodium silicate - Na2SiO3) and used as substitution for aggregate in Portland cement based composite. Half of the produced lightweight aggregate was submitted to thermal treatment and afterwards applied in the construction composite in the same ration as in the case of cold-bonded pellets. The performance characteristics of two types of lightweight composites were mutually compared and afterwards correlated with characteristics of normal-weight concrete. Compressive strength, modulus of elasticity and tensile strength were used as represents of the composites mechanical behavior. Mineral constituents of fly ash pellets were analyzed by means of X-ray diffraction analysis, differential thermal analysis was applied in crystalline phase investigation, and scanning electron microscopy in microstructural analysis. The leaching behavior and environmental impact of hazardous elements were also analyzed. It was concluded that content of potentially toxic elements found in leachate of fly-ash based composites was far below tolerance limit proposed by actual standards for the building materials, characterizing the fly ash non-harmful secondary raw material and enabling its reapplication in building materials industry. Utilizing fly ash to produce quality aggregates should yield significant environmental benefits.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Lightweight construction ceramic composites based of pelletized fly ash aggregate",
pages = "32-33",
url = "https://hdl.handle.net/21.15107/rcub_dais_413"
}

Terzić, A., Radojević, Z., Miličić, L., Obradović, N., Pavlović, V. B.,& Pavlović, L.. (2013). Lightweight construction ceramic composites based of pelletized fly ash aggregate. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
Belgrade : Serbian Ceramic Society., 32-33.
https://hdl.handle.net/21.15107/rcub_dais_413

Terzić A, Radojević Z, Miličić L, Obradović N, Pavlović VB, Pavlović L. Lightweight construction ceramic composites based of pelletized fly ash aggregate. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade. 2013;:32-33.
https://hdl.handle.net/21.15107/rcub_dais_413 .

Terzić, Anja, Radojević, Zagorka, Miličić, Ljiljana, Obradović, Nina, Pavlović, Vladimir B., Pavlović, Ljubica, "Lightweight construction ceramic composites based of pelletized fly ash aggregate" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade (2013):32-33,
https://hdl.handle.net/21.15107/rcub_dais_413 .

TY  - JOUR
AU  - Obradović, Nina
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/491
AB  - Characterization of adsorption-desorption (AD) processes of gas particles on semiconductors is necessary in order to investigate the influence of these processes on the micro/nano-devices performance. By applying a numerical computational method we determined the pressure dependence of the equilibrium coverage of the semiconductor surface by chemisorbed gas particles. We concluded that the pressure dependence of the total coverage of the surface by adparticles, and also of coverages by both the neutral and ionized adparticles, can be obtained by measuring the adsorbed mass. We propose the use of nanocantilever sensors for such extremely sensitive mass measurements. The obtained adsorption induced cantilever's resonant frequency shifts are higher than the detection threshold set by the termomechanical noise. This confirms the applicability of the used nanocantilever sensor for experimental characterization of AD processes at semiconductor surfaces.
PB  - Amsterdam : Springer Netherlands
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Dehydration investigations of a refractory concrete using DTA method
SP  - 37
EP  - 41
VL  - 110
IS  - 1
DO  - 10.1007/s10973-011-1880-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_491
ER  - 

@article{
author = "Obradović, Nina and Terzić, Anja and Pavlović, Ljubica and Filipović, Suzana and Pavlović, Vladimir B.",
year = "2012",
abstract = "Characterization of adsorption-desorption (AD) processes of gas particles on semiconductors is necessary in order to investigate the influence of these processes on the micro/nano-devices performance. By applying a numerical computational method we determined the pressure dependence of the equilibrium coverage of the semiconductor surface by chemisorbed gas particles. We concluded that the pressure dependence of the total coverage of the surface by adparticles, and also of coverages by both the neutral and ionized adparticles, can be obtained by measuring the adsorbed mass. We propose the use of nanocantilever sensors for such extremely sensitive mass measurements. The obtained adsorption induced cantilever's resonant frequency shifts are higher than the detection threshold set by the termomechanical noise. This confirms the applicability of the used nanocantilever sensor for experimental characterization of AD processes at semiconductor surfaces.",
publisher = "Amsterdam : Springer Netherlands",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Dehydration investigations of a refractory concrete using DTA method",
pages = "37-41",
volume = "110",
number = "1",
doi = "10.1007/s10973-011-1880-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_491"
}

Obradović, N., Terzić, A., Pavlović, L., Filipović, S.,& Pavlović, V. B.. (2012). Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry
Amsterdam : Springer Netherlands., 110(1), 37-41.
https://doi.org/10.1007/s10973-011-1880-3
https://hdl.handle.net/21.15107/rcub_dais_491

Obradović N, Terzić A, Pavlović L, Filipović S, Pavlović VB. Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry. 2012;110(1):37-41.
doi:10.1007/s10973-011-1880-3
https://hdl.handle.net/21.15107/rcub_dais_491 .

Obradović, Nina, Terzić, Anja, Pavlović, Ljubica, Filipović, Suzana, Pavlović, Vladimir B., "Dehydration investigations of a refractory concrete using DTA method" in Journal of Thermal Analysis and Calorimetry, 110, no. 1 (2012):37-41,
https://doi.org/10.1007/s10973-011-1880-3 .,
https://hdl.handle.net/21.15107/rcub_dais_491 .

TY  - JOUR
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Stojanović, J.
AU  - Miličić, Lj.
AU  - Radojević, Zagorka
AU  - Ristić, Momčilo M.
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/193
AB  - Amount of fly ash which is and yet to be generated in the coming years highlights the necessity of developing new methods of the recycling where this waste can be reused in significant quantity. A new possibility for fly ash utilization is in high-temperature application (thermal insulators or/and refractory material products). As such, fly ash has to adequately answer the mechanical and thermal stability criteria. One of the ways of achieving it is by applying mechanical activation procedure on fly ash. In present study, fly ashes from two different power plants were mechanically activated in a planetary ball mill. Mechanically treated fly ashes were cemented with two different binders: standard Portland cement and high-aluminates cement. Physico-chemical analysis and investigation of mineralogical components of composites are emphasized, due to the changes occurred in fly ash during mechanical activation and sintering of composites. Macro-performance of the composites was correlated to the microstructure of fly ash studied by means of XRD and SEM analysis. Thermal stability of crystalline phases was investigated with DTA. Highlight was placed on determination of relationship between mechanically activated fly ash and obtained composites microstructure on one side and behavior of sintered composites on the other side. [Projekat Ministarstva nauke Republike Srbije, br. 172057, 45008 and a project F-198, financed by Serbian Academy of Sciences and Arts]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Synthesis and sintering of high-temperature composites based on mechanically activated fly ash
SP  - 135
EP  - 146
VL  - 44
IS  - 2
DO  - 10.2298/SOS1202135T
UR  - https://hdl.handle.net/21.15107/rcub_dais_193
ER  - 

@article{
author = "Terzić, Anja and Pavlović, Ljubica and Obradović, Nina and Pavlović, Vladimir B. and Stojanović, J. and Miličić, Lj. and Radojević, Zagorka and Ristić, Momčilo M.",
year = "2012",
abstract = "Amount of fly ash which is and yet to be generated in the coming years highlights the necessity of developing new methods of the recycling where this waste can be reused in significant quantity. A new possibility for fly ash utilization is in high-temperature application (thermal insulators or/and refractory material products). As such, fly ash has to adequately answer the mechanical and thermal stability criteria. One of the ways of achieving it is by applying mechanical activation procedure on fly ash. In present study, fly ashes from two different power plants were mechanically activated in a planetary ball mill. Mechanically treated fly ashes were cemented with two different binders: standard Portland cement and high-aluminates cement. Physico-chemical analysis and investigation of mineralogical components of composites are emphasized, due to the changes occurred in fly ash during mechanical activation and sintering of composites. Macro-performance of the composites was correlated to the microstructure of fly ash studied by means of XRD and SEM analysis. Thermal stability of crystalline phases was investigated with DTA. Highlight was placed on determination of relationship between mechanically activated fly ash and obtained composites microstructure on one side and behavior of sintered composites on the other side. [Projekat Ministarstva nauke Republike Srbije, br. 172057, 45008 and a project F-198, financed by Serbian Academy of Sciences and Arts]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Synthesis and sintering of high-temperature composites based on mechanically activated fly ash",
pages = "135-146",
volume = "44",
number = "2",
doi = "10.2298/SOS1202135T",
url = "https://hdl.handle.net/21.15107/rcub_dais_193"
}

Terzić, A., Pavlović, L., Obradović, N., Pavlović, V. B., Stojanović, J., Miličić, Lj., Radojević, Z.,& Ristić, M. M.. (2012). Synthesis and sintering of high-temperature composites based on mechanically activated fly ash. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 44(2), 135-146.
https://doi.org/10.2298/SOS1202135T
https://hdl.handle.net/21.15107/rcub_dais_193

Terzić A, Pavlović L, Obradović N, Pavlović VB, Stojanović J, Miličić L, Radojević Z, Ristić MM. Synthesis and sintering of high-temperature composites based on mechanically activated fly ash. in Science of Sintering. 2012;44(2):135-146.
doi:10.2298/SOS1202135T
https://hdl.handle.net/21.15107/rcub_dais_193 .

Terzić, Anja, Pavlović, Ljubica, Obradović, Nina, Pavlović, Vladimir B., Stojanović, J., Miličić, Lj., Radojević, Zagorka, Ristić, Momčilo M., "Synthesis and sintering of high-temperature composites based on mechanically activated fly ash" in Science of Sintering, 44, no. 2 (2012):135-146,
https://doi.org/10.2298/SOS1202135T .,
https://hdl.handle.net/21.15107/rcub_dais_193 .

TY  - CONF
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Aćimović Pavlović, Zagorka
AU  - Obradović, Nina
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/762
AB  - Concretes whose structure and final properties are shaped during thermal pre-treatment or during life-service at elevated temperatures can be applied as construction material for thermal insulation and/or refractory linings in high-temperatureoperating plants. Refractory concretes designed with waste raw materials show satisfying performances in comparison with standard concretes. Sintering initiates microstructural changes within concrete. Concrete microstructure further develops with increasing temperature. Change progression can be monitored by means of destructive and non-destructive tests: either by investigating change of compressive strength or apparent porosity of concrete samples. Destructive tests, in this study, were applied in compressive strength investigation, while non-destructive tests were performed for results comparison. Experiment has been conducted on corundum (standard) concrete and recycled bauxite (experimental) concrete. Samples underwent thermal treatment from 110 to 1500°C. Macroperformance of the final refractory concrete was correlated to the microstructural change detected by means of XRD and SEM analysis. Creep testing was conducted to prove sintering process. Results showed that recycled concrete has equal if not better properties in comparison with standard refractory concrete and can be used as thermoinsulation or refractory material. The results presented in this paper contribute to the idea of including other testing methods (i.e. nondestructive methods) in investigation of microstructural changes and sintering process of refractory concrete. At the same time results of this investigation highlight advantages of application of secondary raw materials in design of refractory materials. Although recycled aggregate concrete showed lower compressive strength and higher porosity than commercial concrete it should be noted that both porosity and compressive strength are within satisfying value range for high-temperature application, i.e. these concretes will not be used as structural materials but as thermal insulation linings. In such application refractoriness is the property which is more important than strength. Considering the fact that compressive strength is above 50 MPa (and above 20 MPa at 1500°c) these concretes should be able to withstand load induced by other constructive parts of furnace and slag. Refractoriness test showed that bauxite-based recycled concrete is highly resistible on increasing temperatures and creep test showed initiation of sintering process. Corundum concrete can be used for temperature above 1500°c. Due to the satisfying performances it is concluded that recycled concrete can be equally used as standard concrete. Even though it has slightly lower properties, accent should be on the financial and ecological benefit found in using of recycled material and savings of energy and natural resources.
PB  - Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD
C3  - 3rd International Samsonov Memorial Conference “Materials Science of Refractory Compounds", May 23-25, Ukraine: Conference Abstracts
T1  - Microstructural changes initiated by sintering of refractory concrete based on recycled bauxite aggregate
SP  - 73
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_dais_762
ER  - 

@conference{
author = "Terzić, Anja and Pavlović, Ljubica and Aćimović Pavlović, Zagorka and Obradović, Nina",
year = "2012",
abstract = "Concretes whose structure and final properties are shaped during thermal pre-treatment or during life-service at elevated temperatures can be applied as construction material for thermal insulation and/or refractory linings in high-temperatureoperating plants. Refractory concretes designed with waste raw materials show satisfying performances in comparison with standard concretes. Sintering initiates microstructural changes within concrete. Concrete microstructure further develops with increasing temperature. Change progression can be monitored by means of destructive and non-destructive tests: either by investigating change of compressive strength or apparent porosity of concrete samples. Destructive tests, in this study, were applied in compressive strength investigation, while non-destructive tests were performed for results comparison. Experiment has been conducted on corundum (standard) concrete and recycled bauxite (experimental) concrete. Samples underwent thermal treatment from 110 to 1500°C. Macroperformance of the final refractory concrete was correlated to the microstructural change detected by means of XRD and SEM analysis. Creep testing was conducted to prove sintering process. Results showed that recycled concrete has equal if not better properties in comparison with standard refractory concrete and can be used as thermoinsulation or refractory material. The results presented in this paper contribute to the idea of including other testing methods (i.e. nondestructive methods) in investigation of microstructural changes and sintering process of refractory concrete. At the same time results of this investigation highlight advantages of application of secondary raw materials in design of refractory materials. Although recycled aggregate concrete showed lower compressive strength and higher porosity than commercial concrete it should be noted that both porosity and compressive strength are within satisfying value range for high-temperature application, i.e. these concretes will not be used as structural materials but as thermal insulation linings. In such application refractoriness is the property which is more important than strength. Considering the fact that compressive strength is above 50 MPa (and above 20 MPa at 1500°c) these concretes should be able to withstand load induced by other constructive parts of furnace and slag. Refractoriness test showed that bauxite-based recycled concrete is highly resistible on increasing temperatures and creep test showed initiation of sintering process. Corundum concrete can be used for temperature above 1500°c. Due to the satisfying performances it is concluded that recycled concrete can be equally used as standard concrete. Even though it has slightly lower properties, accent should be on the financial and ecological benefit found in using of recycled material and savings of energy and natural resources.",
publisher = "Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD",
journal = "3rd International Samsonov Memorial Conference “Materials Science of Refractory Compounds", May 23-25, Ukraine: Conference Abstracts",
title = "Microstructural changes initiated by sintering of refractory concrete based on recycled bauxite aggregate",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_dais_762"
}

Terzić, A., Pavlović, L., Aćimović Pavlović, Z.,& Obradović, N.. (2012). Microstructural changes initiated by sintering of refractory concrete based on recycled bauxite aggregate. in 3rd International Samsonov Memorial Conference “Materials Science of Refractory Compounds", May 23-25, Ukraine: Conference Abstracts
Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD., 73-73.
https://hdl.handle.net/21.15107/rcub_dais_762

Terzić A, Pavlović L, Aćimović Pavlović Z, Obradović N. Microstructural changes initiated by sintering of refractory concrete based on recycled bauxite aggregate. in 3rd International Samsonov Memorial Conference “Materials Science of Refractory Compounds", May 23-25, Ukraine: Conference Abstracts. 2012;:73-73.
https://hdl.handle.net/21.15107/rcub_dais_762 .

Terzić, Anja, Pavlović, Ljubica, Aćimović Pavlović, Zagorka, Obradović, Nina, "Microstructural changes initiated by sintering of refractory concrete based on recycled bauxite aggregate" in 3rd International Samsonov Memorial Conference “Materials Science of Refractory Compounds", May 23-25, Ukraine: Conference Abstracts (2012):73-73,
https://hdl.handle.net/21.15107/rcub_dais_762 .

TY  - CONF
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Radojević, Zagorka
AU  - Miličić, Ljiljana
AU  - Aćimović Pavlović, Zagorka
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/532
AB  - The aim of the presented study is to evaluate utilization potential of the fly ash which is the main residue from the coal combustion thermal-plants. Decades long high production of fly ash represents extreme hazard for the environment. The storage problem of this waste material is also alerting. Thus, recycling and reapplication of fly ash in construction materials industry is the only economic solution. The well-known examples of fly-ash reapplication as a component in cement, mortar, concrete, bricks and tiles are not enough in means of reusing extreme amounts of this waste material. Therefore, new applications in ash-based composites have to be developed: eco-ceramic materials and sintered materials for refractory performances. In this investigation, characterization of three different fly ash capacities was used as base for further fly ash utilization possibilities analysis. Accent was on the investigation of the fly ash mineralogical and chemical composition. Thermal stability of crystalline phases was investigated with DTA. Macro-performance was correlated with the microstructure of fly ash studied by means of XRD and SEM analysis. Furthermore, content of trace elements, physico-chemical characteristics and leaching toxicity tests were carried out. Comparing the properties of investigated fly ashes with standard values, it could be presumed that fly ash originating from Serbian power plants can be potentially useful for high value products - eco-ceramic and refractory/sintered materials manufacturing. Key words: fly ash, microstructure, potential reusing, eco-ceramic, sintering.
Acknowledgements: This investigation was supported by Serbian Ministry of Science and Education and it was conducted under following projects: 172057 and 45008.
PB  - Belgrade : Serbian Ceramic Society
C3  - The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
T1  - Evaluation of Fly Ash Pysico-chemical Characteristics as Component for Eco-ceramic and Sintered Materials
SP  - 32
EP  - 32
UR  - https://hdl.handle.net/21.15107/rcub_dais_532
ER  - 

@conference{
author = "Terzić, Anja and Pavlović, Ljubica and Obradović, Nina and Pavlović, Vladimir B. and Radojević, Zagorka and Miličić, Ljiljana and Aćimović Pavlović, Zagorka",
year = "2012",
abstract = "The aim of the presented study is to evaluate utilization potential of the fly ash which is the main residue from the coal combustion thermal-plants. Decades long high production of fly ash represents extreme hazard for the environment. The storage problem of this waste material is also alerting. Thus, recycling and reapplication of fly ash in construction materials industry is the only economic solution. The well-known examples of fly-ash reapplication as a component in cement, mortar, concrete, bricks and tiles are not enough in means of reusing extreme amounts of this waste material. Therefore, new applications in ash-based composites have to be developed: eco-ceramic materials and sintered materials for refractory performances. In this investigation, characterization of three different fly ash capacities was used as base for further fly ash utilization possibilities analysis. Accent was on the investigation of the fly ash mineralogical and chemical composition. Thermal stability of crystalline phases was investigated with DTA. Macro-performance was correlated with the microstructure of fly ash studied by means of XRD and SEM analysis. Furthermore, content of trace elements, physico-chemical characteristics and leaching toxicity tests were carried out. Comparing the properties of investigated fly ashes with standard values, it could be presumed that fly ash originating from Serbian power plants can be potentially useful for high value products - eco-ceramic and refractory/sintered materials manufacturing. Key words: fly ash, microstructure, potential reusing, eco-ceramic, sintering.
Acknowledgements: This investigation was supported by Serbian Ministry of Science and Education and it was conducted under following projects: 172057 and 45008.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts",
title = "Evaluation of Fly Ash Pysico-chemical Characteristics as Component for Eco-ceramic and Sintered Materials",
pages = "32-32",
url = "https://hdl.handle.net/21.15107/rcub_dais_532"
}

Terzić, A., Pavlović, L., Obradović, N., Pavlović, V. B., Radojević, Z., Miličić, L.,& Aćimović Pavlović, Z.. (2012). Evaluation of Fly Ash Pysico-chemical Characteristics as Component for Eco-ceramic and Sintered Materials. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
Belgrade : Serbian Ceramic Society., 32-32.
https://hdl.handle.net/21.15107/rcub_dais_532

Terzić A, Pavlović L, Obradović N, Pavlović VB, Radojević Z, Miličić L, Aćimović Pavlović Z. Evaluation of Fly Ash Pysico-chemical Characteristics as Component for Eco-ceramic and Sintered Materials. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts. 2012;:32-32.
https://hdl.handle.net/21.15107/rcub_dais_532 .

Terzić, Anja, Pavlović, Ljubica, Obradović, Nina, Pavlović, Vladimir B., Radojević, Zagorka, Miličić, Ljiljana, Aćimović Pavlović, Zagorka, "Evaluation of Fly Ash Pysico-chemical Characteristics as Component for Eco-ceramic and Sintered Materials" in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts (2012):32-32,
https://hdl.handle.net/21.15107/rcub_dais_532 .

TY  - CONF
AU  - Obradović, Nina
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/635
AB  - The base mix refractory concrete is corundum based, containing corundum as refractory aggregate and CAC as hydraulic binder, with spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis (DTA) at three different heating rates (10, 20 and 30 •C/min). Thus, temperature was increased from 20 to 1100 •C. Activation energy during sintering process was determined by Kissinger method. Obtained values of activation energies were: 90.576 kJ/mol; 140.972 kJ/mol and 148.447 kJ/mol for TI, T2 and T3, respectively.
PB  - Craiova
C3  - Book of abstracts / CEEC-TACI : 1st Central and Eastern European Conference on Thermal Analysis and Calorimetry 7-10 September 2011, Craiova, Romania
T1  - Dehydration kinetics investigation of refractory concrete during sintering using DTA method
SP  - 45
EP  - 45
UR  - https://hdl.handle.net/21.15107/rcub_dais_635
ER  - 

@conference{
author = "Obradović, Nina and Terzić, Anja and Pavlović, Ljubica and Filipović, Suzana and Pavlović, Vladimir B.",
year = "2011",
abstract = "The base mix refractory concrete is corundum based, containing corundum as refractory aggregate and CAC as hydraulic binder, with spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis (DTA) at three different heating rates (10, 20 and 30 •C/min). Thus, temperature was increased from 20 to 1100 •C. Activation energy during sintering process was determined by Kissinger method. Obtained values of activation energies were: 90.576 kJ/mol; 140.972 kJ/mol and 148.447 kJ/mol for TI, T2 and T3, respectively.",
publisher = "Craiova",
journal = "Book of abstracts / CEEC-TACI : 1st Central and Eastern European Conference on Thermal Analysis and Calorimetry 7-10 September 2011, Craiova, Romania",
title = "Dehydration kinetics investigation of refractory concrete during sintering using DTA method",
pages = "45-45",
url = "https://hdl.handle.net/21.15107/rcub_dais_635"
}

Obradović, N., Terzić, A., Pavlović, L., Filipović, S.,& Pavlović, V. B.. (2011). Dehydration kinetics investigation of refractory concrete during sintering using DTA method. in Book of abstracts / CEEC-TACI : 1st Central and Eastern European Conference on Thermal Analysis and Calorimetry 7-10 September 2011, Craiova, Romania
Craiova., 45-45.
https://hdl.handle.net/21.15107/rcub_dais_635

Obradović N, Terzić A, Pavlović L, Filipović S, Pavlović VB. Dehydration kinetics investigation of refractory concrete during sintering using DTA method. in Book of abstracts / CEEC-TACI : 1st Central and Eastern European Conference on Thermal Analysis and Calorimetry 7-10 September 2011, Craiova, Romania. 2011;:45-45.
https://hdl.handle.net/21.15107/rcub_dais_635 .

Obradović, Nina, Terzić, Anja, Pavlović, Ljubica, Filipović, Suzana, Pavlović, Vladimir B., "Dehydration kinetics investigation of refractory concrete during sintering using DTA method" in Book of abstracts / CEEC-TACI : 1st Central and Eastern European Conference on Thermal Analysis and Calorimetry 7-10 September 2011, Craiova, Romania (2011):45-45,
https://hdl.handle.net/21.15107/rcub_dais_635 .