Vukčević, Mira

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  • Vukčević, Mira (3)
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Author's Bibliography

Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2

Bošković, Ivana V.; Vukčević, Mira; Nenadović, Snežana S.; Mirković, Miljana M.; Stojmenović, Marija; Pavlović, Vladimir B.; Kljajević, Ljiljana M.

(2019)

TY  - JOUR
AU  - Bošković, Ivana V.
AU  - Vukčević, Mira
AU  - Nenadović, Snežana S.
AU  - Mirković, Miljana M.
AU  - Stojmenović, Marija
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana M.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8351
AB  - Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase. ©, Institute of Metals and Technology, Ljubljana, Slovenia.
T2  - Materiali in tehnologije
T1  - Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2
VL  - 53
IS  - 3
SP  - 341
EP  - 348
DO  - 10.17222/mit.2018.130
ER  - 
@article{
author = "Bošković, Ivana V. and Vukčević, Mira and Nenadović, Snežana S. and Mirković, Miljana M. and Stojmenović, Marija and Pavlović, Vladimir B. and Kljajević, Ljiljana M.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8351",
abstract = "Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase. ©, Institute of Metals and Technology, Ljubljana, Slovenia.",
journal = "Materiali in tehnologije",
title = "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2",
volume = "53",
number = "3",
pages = "341-348",
doi = "10.17222/mit.2018.130"
}
Bošković, I. V., Vukčević, M., Nenadović, S. S., Mirković, M. M., Stojmenović, M., Pavlović, V. B.,& Kljajević, L. M. (2019). Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2.
Materiali in tehnologije, 53(3), 341-348.
https://doi.org/10.17222/mit.2018.130
Bošković IV, Vukčević M, Nenadović SS, Mirković MM, Stojmenović M, Pavlović VB, Kljajević LM. Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2. Materiali in tehnologije. 2019;53(3):341-348
Bošković Ivana V., Vukčević Mira, Nenadović Snežana S., Mirković Miljana M., Stojmenović Marija, Pavlović Vladimir B., Kljajević Ljiljana M., "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2" Materiali in tehnologije, 53, no. 3 (2019):341-348,
https://doi.org/10.17222/mit.2018.130 .
2
1
2

Radiological and physicochemical properties of red mud based geopolymers

Bošković, Ivana V.; Nenadović, Snežana S.; Kljajević, Ljiljana M.; Vukanac, Ivana; Stanković, Nadežda; Lukovic, Jelena M.; Vukčević, Mira

(2018)

TY  - JOUR
AU  - Bošković, Ivana V.
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Vukanac, Ivana
AU  - Stanković, Nadežda
AU  - Lukovic, Jelena M.
AU  - Vukčević, Mira
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941802188B
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7881
AB  - A significant amount of red mud generated as a by-product of the Bayer process in the aluminum industry may cause environmental problems if appropriate treatment is not carried out. The presented research dealt with the possibility of application of red mud as a pigment or as raw material for use in the construction material industry. In relation to the aim of this work, the physicochemical characterization was performed and the natural radioactivity of red mud as an industrial waste and a geopolymer sample based on it was determined. The presented research is a contribution to the potential solution for environmental protection through the synthesis of possible construction material based on red mud. The radiological hazard orginating from226Ra,232Th, and40K in the samples was assesed throught the absorbed dose rate and the annual effective dose rate, calculated in accordance with the UNSCEAR 2010 report. Physicochemical characterization of all samples was conducted using X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. © 2018, Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Radiological and physicochemical properties of red mud based geopolymers
VL  - 33
IS  - 2
SP  - 188
EP  - 194
DO  - 10.2298/NTRP1802188B
ER  - 
@article{
author = "Bošković, Ivana V. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Vukanac, Ivana and Stanković, Nadežda and Lukovic, Jelena M. and Vukčević, Mira",
year = "2018",
url = "http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941802188B, http://vinar.vin.bg.ac.rs/handle/123456789/7881",
abstract = "A significant amount of red mud generated as a by-product of the Bayer process in the aluminum industry may cause environmental problems if appropriate treatment is not carried out. The presented research dealt with the possibility of application of red mud as a pigment or as raw material for use in the construction material industry. In relation to the aim of this work, the physicochemical characterization was performed and the natural radioactivity of red mud as an industrial waste and a geopolymer sample based on it was determined. The presented research is a contribution to the potential solution for environmental protection through the synthesis of possible construction material based on red mud. The radiological hazard orginating from226Ra,232Th, and40K in the samples was assesed throught the absorbed dose rate and the annual effective dose rate, calculated in accordance with the UNSCEAR 2010 report. Physicochemical characterization of all samples was conducted using X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. © 2018, Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Radiological and physicochemical properties of red mud based geopolymers",
volume = "33",
number = "2",
pages = "188-194",
doi = "10.2298/NTRP1802188B"
}
Bošković, I. V., Nenadović, S. S., Kljajević, L. M., Vukanac, I., Stanković, N., Lukovic, J. M.,& Vukčević, M. (2018). Radiological and physicochemical properties of red mud based geopolymers.
Nuclear Technology and Radiation Protection, 33(2), 188-194.
https://doi.org/10.2298/NTRP1802188B
Bošković IV, Nenadović SS, Kljajević LM, Vukanac I, Stanković N, Lukovic JM, Vukčević M. Radiological and physicochemical properties of red mud based geopolymers. Nuclear Technology and Radiation Protection. 2018;33(2):188-194
Bošković Ivana V., Nenadović Snežana S., Kljajević Ljiljana M., Vukanac Ivana, Stanković Nadežda, Lukovic Jelena M., Vukčević Mira, "Radiological and physicochemical properties of red mud based geopolymers" Nuclear Technology and Radiation Protection, 33, no. 2 (2018):188-194,
https://doi.org/10.2298/NTRP1802188B .
2
2
2

Composition of red mud and/or metakaolin-based modified geopolymers

Uskoković, Dragan; Radmilović, Velimir R.; Vukčević, Mira; Bošković, Ivana V.; Nenadović, Snežana S.; Mirković, Miljana M.; Čalija, Bojan; Pavlović, Vladimir B.; Kljajević, Ljiljana M.

(Belgrade : Materials Research Society of Serbia, 2017)

TY  - CONF
AU  - Vukčević, Mira
AU  - Bošković, Ivana V.
AU  - Nenadović, Snežana S.
AU  - Mirković, Miljana M.
AU  - Čalija, Bojan
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana M.
PY  - 2017
UR  - http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1207
UR  - http://itn.sanu.ac.rs/opus4/files/1207/Vukcevic_YUCOMAT2017.pdf
UR  - http://dais.sanu.ac.rs/123456789/15438
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7558
AB  - There is potential use of red mud for synthesis of inorganic polymeric materials through a geopolymerization process as an alternative in the sectors of construction and building materials. By introducing of inorganic and organic modificators of microstructure (calcium hydroxide, bifunctional epoxy resins, or various types of alkoxylanes) during the geopolymer synthesis the enhanced values of ductility and strength can be obtained. Research was performed on alumosilicate material (red mud and metakaolin) and alkali activator raw mixture with defined quantity of modificator. The best sinthesys conditions were identified. Post-synthesis curing also play important role in obtaining of good-performing geopolymers. Characteristics of geopolymers were defined by measuring of compressive strength, N2-physisorption, as well as by SEM analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In addition the lower value of zeta potential was identified as the assisting factor for the specific structure domains formation (within the certain range of pH) accompanied by the high compressive strength.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
T1  - Composition of red mud and/or metakaolin-based modified geopolymers
SP  - 72
EP  - 72
ER  - 
@conference{
editor = "Uskoković, Dragan, Radmilović, Velimir R.",
author = "Vukčević, Mira and Bošković, Ivana V. and Nenadović, Snežana S. and Mirković, Miljana M. and Čalija, Bojan and Pavlović, Vladimir B. and Kljajević, Ljiljana M.",
year = "2017",
url = "http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1207, http://itn.sanu.ac.rs/opus4/files/1207/Vukcevic_YUCOMAT2017.pdf, http://dais.sanu.ac.rs/123456789/15438, http://vinar.vin.bg.ac.rs/handle/123456789/7558",
abstract = "There is potential use of red mud for synthesis of inorganic polymeric materials through a geopolymerization process as an alternative in the sectors of construction and building materials. By introducing of inorganic and organic modificators of microstructure (calcium hydroxide, bifunctional epoxy resins, or various types of alkoxylanes) during the geopolymer synthesis the enhanced values of ductility and strength can be obtained. Research was performed on alumosilicate material (red mud and metakaolin) and alkali activator raw mixture with defined quantity of modificator. The best sinthesys conditions were identified. Post-synthesis curing also play important role in obtaining of good-performing geopolymers. Characteristics of geopolymers were defined by measuring of compressive strength, N2-physisorption, as well as by SEM analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In addition the lower value of zeta potential was identified as the assisting factor for the specific structure domains formation (within the certain range of pH) accompanied by the high compressive strength.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017",
title = "Composition of red mud and/or metakaolin-based modified geopolymers",
pages = "72-72"
}
Uskoković, D., Radmilović, V. R., Vukčević, M., Bošković, I. V., Nenadović, S. S., Mirković, M. M., Čalija, B., Pavlović, V. B.,& Kljajević, L. M. (2017). Composition of red mud and/or metakaolin-based modified geopolymers.
Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
Belgrade : Materials Research Society of Serbia., 72-72.
Uskoković D, Radmilović VR, Vukčević M, Bošković IV, Nenadović SS, Mirković MM, Čalija B, Pavlović VB, Kljajević LM. Composition of red mud and/or metakaolin-based modified geopolymers. Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017. 2017;:72-72
Uskoković Dragan, Radmilović Velimir R., Vukčević Mira, Bošković Ivana V., Nenadović Snežana S., Mirković Miljana M., Čalija Bojan, Pavlović Vladimir B., Kljajević Ljiljana M., "Composition of red mud and/or metakaolin-based modified geopolymers" Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017 (2017):72-72