TY  - JOUR
AU  - Nikolić, Violeta
AU  - Komljenović, Miroslav M
AU  - Baščarević, Zvezdana
AU  - Džunuzović, Nataša
AU  - Miladinović, Zoran P.
AU  - Petrović, Rada
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/825
AB  - Reactivity of Class F fly ash (FA), development of strength, and structure of FA-based geopolymers, depending on the reaction conditions, were examined in this paper. The results of SEM/EDS and NMR analyses revealed that the composition of aluminosilicate gel changed during reaction, i.e. Si/Al atomic ratio decreased with the reaction time. Higher strength of geopolymers was associated with a higher fraction of aluminum rich structural units, higher crosslinking, and more compact structure. A rapid test for the assessment of FA reactivity and thus the applicability of FA for geopolymer synthesis was proposed.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers
EP  - 370
SP  - 361
VL  - 94
DO  - 10.1016/j.conbuildmat.2015.07.014
ER  - 

@article{
author = "Nikolić, Violeta and Komljenović, Miroslav M and Baščarević, Zvezdana and Džunuzović, Nataša and Miladinović, Zoran P. and Petrović, Rada",
year = "2015",
abstract = "Reactivity of Class F fly ash (FA), development of strength, and structure of FA-based geopolymers, depending on the reaction conditions, were examined in this paper. The results of SEM/EDS and NMR analyses revealed that the composition of aluminosilicate gel changed during reaction, i.e. Si/Al atomic ratio decreased with the reaction time. Higher strength of geopolymers was associated with a higher fraction of aluminum rich structural units, higher crosslinking, and more compact structure. A rapid test for the assessment of FA reactivity and thus the applicability of FA for geopolymer synthesis was proposed.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers",
pages = "370-361",
volume = "94",
doi = "10.1016/j.conbuildmat.2015.07.014"
}

Nikolić, V., Komljenović, M. M., Baščarević, Z., Džunuzović, N., Miladinović, Z. P.,& Petrović, R.. (2015). The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 94, 361-370.
https://doi.org/10.1016/j.conbuildmat.2015.07.014

Nikolić V, Komljenović MM, Baščarević Z, Džunuzović N, Miladinović ZP, Petrović R. The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers. in Construction and Building Materials. 2015;94:361-370.
doi:10.1016/j.conbuildmat.2015.07.014 .

Nikolić, Violeta, Komljenović, Miroslav M, Baščarević, Zvezdana, Džunuzović, Nataša, Miladinović, Zoran P., Petrović, Rada, "The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers" in Construction and Building Materials, 94 (2015):361-370,
https://doi.org/10.1016/j.conbuildmat.2015.07.014 . .

TY  - JOUR
AU  - Nikolić, Violeta
AU  - Komljenović, Miroslav M
AU  - Džunuzović, Nataša
AU  - Baščarević, Zvezdana
AU  - Petrović, Rada D
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/795
AB  - In this paper, the effectiveness of geopolymers based on initial and mechanically activated fly ash in immobilization of lead was investigated. Fly ash (FA) was firstly mechanically and then alkali activated at room temperature. The immobilization process was assessed by the means of the mechanical and leaching properties of geopolymers. The results indicated that the geopolymers based on mechanically activated FA were more effective in the immobilization of lead compared to the geopolymers based on the initial FA. Mechanical activation of FA led to a significant increase in strength and reduced Pb leaching from geopolymers. Higher effectiveness of Pb immobilization was the result of reduced porosity, i.e. higher compactness of geopolymers based on mechanically activated FA.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Lead immobilization by geopolymers based on mechanically activated fly ash
EP  - 8488
IS  - 6
SP  - 8479
VL  - 40
DO  - 10.1016/j.ceramint.2014.01.059
ER  - 

@article{
author = "Nikolić, Violeta and Komljenović, Miroslav M and Džunuzović, Nataša and Baščarević, Zvezdana and Petrović, Rada D",
year = "2014",
abstract = "In this paper, the effectiveness of geopolymers based on initial and mechanically activated fly ash in immobilization of lead was investigated. Fly ash (FA) was firstly mechanically and then alkali activated at room temperature. The immobilization process was assessed by the means of the mechanical and leaching properties of geopolymers. The results indicated that the geopolymers based on mechanically activated FA were more effective in the immobilization of lead compared to the geopolymers based on the initial FA. Mechanical activation of FA led to a significant increase in strength and reduced Pb leaching from geopolymers. Higher effectiveness of Pb immobilization was the result of reduced porosity, i.e. higher compactness of geopolymers based on mechanically activated FA.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Lead immobilization by geopolymers based on mechanically activated fly ash",
pages = "8488-8479",
number = "6",
volume = "40",
doi = "10.1016/j.ceramint.2014.01.059"
}

Nikolić, V., Komljenović, M. M., Džunuzović, N., Baščarević, Z.,& Petrović, R. D.. (2014). Lead immobilization by geopolymers based on mechanically activated fly ash. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(6), 8479-8488.
https://doi.org/10.1016/j.ceramint.2014.01.059

Nikolić V, Komljenović MM, Džunuzović N, Baščarević Z, Petrović RD. Lead immobilization by geopolymers based on mechanically activated fly ash. in Ceramics International. 2014;40(6):8479-8488.
doi:10.1016/j.ceramint.2014.01.059 .

Nikolić, Violeta, Komljenović, Miroslav M, Džunuzović, Nataša, Baščarević, Zvezdana, Petrović, Rada D, "Lead immobilization by geopolymers based on mechanically activated fly ash" in Ceramics International, 40, no. 6 (2014):8479-8488,
https://doi.org/10.1016/j.ceramint.2014.01.059 . .

TY  - JOUR
AU  - Džunuzović, Nataša
AU  - Komljenović, Miroslav M
AU  - Baščarević, Zvezdana
AU  - Nikolić, Violeta
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/792
AB  - This paper investigated the effects of mechanical activation of fly ash (FA) from thermal power plants on physical-mechanical properties and structure of geopolymers. FA from different power plants in Serbia was mechanically activated in planetary ball mill. Geopolymerization was conducted by use of sodium silicate (water glass) at elevated temperature (95 degrees C) for 4 h. It was observed that mechanical activation of FA for 15 mm resulted in drastic increase of geopolymer compressive strength (in all cases >1000%). High strength values were associated with improved FA reactivity obtained mainly by the reduction in particle size and reduced water/binder ratio.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation
EP  - 162
SP  - 151
VL  - 57
DO  - 10.1016/j.conbuildmat.2014.01.095
ER  - 

@article{
author = "Džunuzović, Nataša and Komljenović, Miroslav M and Baščarević, Zvezdana and Nikolić, Violeta",
year = "2014",
abstract = "This paper investigated the effects of mechanical activation of fly ash (FA) from thermal power plants on physical-mechanical properties and structure of geopolymers. FA from different power plants in Serbia was mechanically activated in planetary ball mill. Geopolymerization was conducted by use of sodium silicate (water glass) at elevated temperature (95 degrees C) for 4 h. It was observed that mechanical activation of FA for 15 mm resulted in drastic increase of geopolymer compressive strength (in all cases >1000%). High strength values were associated with improved FA reactivity obtained mainly by the reduction in particle size and reduced water/binder ratio.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation",
pages = "162-151",
volume = "57",
doi = "10.1016/j.conbuildmat.2014.01.095"
}

Džunuzović, N., Komljenović, M. M., Baščarević, Z.,& Nikolić, V.. (2014). Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 57, 151-162.
https://doi.org/10.1016/j.conbuildmat.2014.01.095

Džunuzović N, Komljenović MM, Baščarević Z, Nikolić V. Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation. in Construction and Building Materials. 2014;57:151-162.
doi:10.1016/j.conbuildmat.2014.01.095 .

Džunuzović, Nataša, Komljenović, Miroslav M, Baščarević, Zvezdana, Nikolić, Violeta, "Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation" in Construction and Building Materials, 57 (2014):151-162,
https://doi.org/10.1016/j.conbuildmat.2014.01.095 . .