TY  - CONF
AU  - Đukić, Dunja
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Pavlović, Vladimir B.
AU  - Ivanović, Marija D.
AU  - Nenadović, Miloš T.
AU  - Mirković, Miljana M.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6964
AB  - In a field of green chemistry, environmental protection and ecological conservation of the environment there are ways to come up with new and more advanced materials using on the one hand natural, recyceled or waste materials and on the other hand syntethic materials obtained by using green chemistry synthesis procedures. The aim of this paper was to synthesize and characterize Brushite-metakaolin-based geopolymer materials and to examine the possibility of using these materials in the fields of construction, cement industry, as well as in environmental protection as potential adsorbents. Initial materials which were used for geopolymer synthesis was Brushite (CaHPO4·2H2O) which was obtained by solutionprecipitation reaction form acetate solutions and Kaolinite clay from Rudovci deposit (Serbia). The obtained mixture powders were dissolved in a strong alcaline solution with addiction of water glass. Produced geopolymers was cast into mods and preserved for 28 days. The starting materials and the synthesized Brushite-metakaolin-based geopolymer material were examined using XRPD, FTIR SEM-EDS methods. The contact angle measurements were made to test hydrophilic and wettable properties of synthesized material.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Synthesis and characterization of Brushite-metakaolin-based geopolymer materials
SP  - 86
EP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_dais_6964
ER  - 

@conference{
author = "Đukić, Dunja and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Pavlović, Vladimir B. and Ivanović, Marija D. and Nenadović, Miloš T. and Mirković, Miljana M.",
year = "2019",
abstract = "In a field of green chemistry, environmental protection and ecological conservation of the environment there are ways to come up with new and more advanced materials using on the one hand natural, recyceled or waste materials and on the other hand syntethic materials obtained by using green chemistry synthesis procedures. The aim of this paper was to synthesize and characterize Brushite-metakaolin-based geopolymer materials and to examine the possibility of using these materials in the fields of construction, cement industry, as well as in environmental protection as potential adsorbents. Initial materials which were used for geopolymer synthesis was Brushite (CaHPO4·2H2O) which was obtained by solutionprecipitation reaction form acetate solutions and Kaolinite clay from Rudovci deposit (Serbia). The obtained mixture powders were dissolved in a strong alcaline solution with addiction of water glass. Produced geopolymers was cast into mods and preserved for 28 days. The starting materials and the synthesized Brushite-metakaolin-based geopolymer material were examined using XRPD, FTIR SEM-EDS methods. The contact angle measurements were made to test hydrophilic and wettable properties of synthesized material.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Synthesis and characterization of Brushite-metakaolin-based geopolymer materials",
pages = "86-86",
url = "https://hdl.handle.net/21.15107/rcub_dais_6964"
}

Đukić, D., Nenadović, S. S., Kljajević, L. M., Pavlović, V. B., Ivanović, M. D., Nenadović, M. T.,& Mirković, M. M.. (2019). Synthesis and characterization of Brushite-metakaolin-based geopolymer materials. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 86-86.
https://hdl.handle.net/21.15107/rcub_dais_6964

Đukić D, Nenadović SS, Kljajević LM, Pavlović VB, Ivanović MD, Nenadović MT, Mirković MM. Synthesis and characterization of Brushite-metakaolin-based geopolymer materials. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:86-86.
https://hdl.handle.net/21.15107/rcub_dais_6964 .

Đukić, Dunja, Nenadović, Snežana S., Kljajević, Ljiljana M., Pavlović, Vladimir B., Ivanović, Marija D., Nenadović, Miloš T., Mirković, Miljana M., "Synthesis and characterization of Brushite-metakaolin-based geopolymer materials" in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):86-86,
https://hdl.handle.net/21.15107/rcub_dais_6964 .

TY  - CONF
AU  - Ivanović, Marija D.
AU  - Đukić, Dunja
AU  - Mladenović, Nataša
AU  - Kljajević, Ljiljana M.
AU  - Pavlović, Vladimir B.
AU  - Nenadović, Snežana S.
AU  - Mirković, Miljana M.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6965
AB  - In order to optimize process of geopolymerization, the investigation of thermodynamic parameters of alkali activators are important. The aim of this research was to investigate the influence of thermodynamic parameters (density, viscosity, refractive index and sound velocity) of alkaline activators on mechanical properties (compressive strength and hardness) of synthesized geopolymer samples. Geopolymers were synthetized by alkaline activation of metakaolin, having the density 2.524 g/cm3, using the activators at elevated temperature of 60 oC for two days. Based on the obtained results thermodynamic properties has been selected to predict the properties of materials. Four series of alkaline activators have been used. Activators remarked as AA1, AA2, AA3 and AA4 present the mixtures of Na2SiO3 and solutions of NaOH, of different molarities 2M, 4M, 6M and 8M respectively. The volume ratio of Na2SiO3 and aqueous solution of NaOH was the same for all samples. Densities, viscosities and refractive indices of alkaline activators were determined over the temperature range 15-60 oC of process of geopolymerizations. The values of density, viscosity and refractive index decrease with temperature increase over the investigated temperature range. Increasing molarity of alkali activator solutions, the sound velocity of activators is changed. For sample AA2 the values of sound velocity rises from room temperature to 45 °C and then begins to decrease while for the sample AA3 sound velocity grows until 30 °C and then starts to decrease with further increasing of temperature. Four series of geopolymer samples GP1 to GP4 were synthesiyed using the constant ratio of solid and liquid phase. FTIR, XRD, SEM-EDS methods were used for physicochemical further characterization of geopolymer samples.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - The influence of thermodynamic parameters of the alkaline activator on the mechanical properties of geopolymers
SP  - 87
EP  - 87
UR  - https://hdl.handle.net/21.15107/rcub_dais_6965
ER  - 

@conference{
author = "Ivanović, Marija D. and Đukić, Dunja and Mladenović, Nataša and Kljajević, Ljiljana M. and Pavlović, Vladimir B. and Nenadović, Snežana S. and Mirković, Miljana M.",
year = "2019",
abstract = "In order to optimize process of geopolymerization, the investigation of thermodynamic parameters of alkali activators are important. The aim of this research was to investigate the influence of thermodynamic parameters (density, viscosity, refractive index and sound velocity) of alkaline activators on mechanical properties (compressive strength and hardness) of synthesized geopolymer samples. Geopolymers were synthetized by alkaline activation of metakaolin, having the density 2.524 g/cm3, using the activators at elevated temperature of 60 oC for two days. Based on the obtained results thermodynamic properties has been selected to predict the properties of materials. Four series of alkaline activators have been used. Activators remarked as AA1, AA2, AA3 and AA4 present the mixtures of Na2SiO3 and solutions of NaOH, of different molarities 2M, 4M, 6M and 8M respectively. The volume ratio of Na2SiO3 and aqueous solution of NaOH was the same for all samples. Densities, viscosities and refractive indices of alkaline activators were determined over the temperature range 15-60 oC of process of geopolymerizations. The values of density, viscosity and refractive index decrease with temperature increase over the investigated temperature range. Increasing molarity of alkali activator solutions, the sound velocity of activators is changed. For sample AA2 the values of sound velocity rises from room temperature to 45 °C and then begins to decrease while for the sample AA3 sound velocity grows until 30 °C and then starts to decrease with further increasing of temperature. Four series of geopolymer samples GP1 to GP4 were synthesiyed using the constant ratio of solid and liquid phase. FTIR, XRD, SEM-EDS methods were used for physicochemical further characterization of geopolymer samples.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "The influence of thermodynamic parameters of the alkaline activator on the mechanical properties of geopolymers",
pages = "87-87",
url = "https://hdl.handle.net/21.15107/rcub_dais_6965"
}

Ivanović, M. D., Đukić, D., Mladenović, N., Kljajević, L. M., Pavlović, V. B., Nenadović, S. S.,& Mirković, M. M.. (2019). The influence of thermodynamic parameters of the alkaline activator on the mechanical properties of geopolymers. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 87-87.
https://hdl.handle.net/21.15107/rcub_dais_6965

Ivanović MD, Đukić D, Mladenović N, Kljajević LM, Pavlović VB, Nenadović SS, Mirković MM. The influence of thermodynamic parameters of the alkaline activator on the mechanical properties of geopolymers. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:87-87.
https://hdl.handle.net/21.15107/rcub_dais_6965 .

Ivanović, Marija D., Đukić, Dunja, Mladenović, Nataša, Kljajević, Ljiljana M., Pavlović, Vladimir B., Nenadović, Snežana S., Mirković, Miljana M., "The influence of thermodynamic parameters of the alkaline activator on the mechanical properties of geopolymers" in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):87-87,
https://hdl.handle.net/21.15107/rcub_dais_6965 .