In this paper we have investigated the influence of synthesis parameters on the mechanical properties of the fly-ash-based geopolymer paste and mortars. Moreover, the influence of an addition of limestone sand on the microstructure of fly-ash-based geopolymers was investigated as well. An addition of limestone sand increased the compressive strength of the fly-ash-based geopolymer mortar, in comparison to the strength of the geopolymer paste, by changing the composition of the gel phase in the geopolymer structure and with the physical strengthening due to the presence of well connected grains of the sand. The results have shown that the compressive strength and Young's modulus of elasticity of the fly-ash-based geopolymer mortar are correlated. The values of these parameters increase as the alkali and silicate dosages increase. At one point, they reach the maximum values and then start to decrease. On the other hand, the parameters that considerably increase the compressive strength s...lightly decrease the flexural strength of the geopolymer mortar.
TY - JOUR
AU - Zejak, Radomir
AU - Nikolić, Irena
AU - Blecić, Dragoljub
AU - Radmilović, Vuk
AU - Radmilović, Velimir R.
PY - 2013
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2257
AB - In this paper we have investigated the influence of synthesis parameters on the mechanical properties of the fly-ash-based geopolymer paste and mortars. Moreover, the influence of an addition of limestone sand on the microstructure of fly-ash-based geopolymers was investigated as well. An addition of limestone sand increased the compressive strength of the fly-ash-based geopolymer mortar, in comparison to the strength of the geopolymer paste, by changing the composition of the gel phase in the geopolymer structure and with the physical strengthening due to the presence of well connected grains of the sand. The results have shown that the compressive strength and Young's modulus of elasticity of the fly-ash-based geopolymer mortar are correlated. The values of these parameters increase as the alkali and silicate dosages increase. At one point, they reach the maximum values and then start to decrease. On the other hand, the parameters that considerably increase the compressive strength slightly decrease the flexural strength of the geopolymer mortar.
PB - Institute of Metals and Technology
T2 - Materiali in Tehnologije
T1 - Mechanical and microstructural properties of the fly-ash-based geopolymer paste and mortar
EP - 540
IS - 4
SP - 535
VL - 47
UR - https://hdl.handle.net/21.15107/rcub_technorep_2257
ER -
@article{
author = "Zejak, Radomir and Nikolić, Irena and Blecić, Dragoljub and Radmilović, Vuk and Radmilović, Velimir R.",
year = "2013",
abstract = "In this paper we have investigated the influence of synthesis parameters on the mechanical properties of the fly-ash-based geopolymer paste and mortars. Moreover, the influence of an addition of limestone sand on the microstructure of fly-ash-based geopolymers was investigated as well. An addition of limestone sand increased the compressive strength of the fly-ash-based geopolymer mortar, in comparison to the strength of the geopolymer paste, by changing the composition of the gel phase in the geopolymer structure and with the physical strengthening due to the presence of well connected grains of the sand. The results have shown that the compressive strength and Young's modulus of elasticity of the fly-ash-based geopolymer mortar are correlated. The values of these parameters increase as the alkali and silicate dosages increase. At one point, they reach the maximum values and then start to decrease. On the other hand, the parameters that considerably increase the compressive strength slightly decrease the flexural strength of the geopolymer mortar.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Mechanical and microstructural properties of the fly-ash-based geopolymer paste and mortar",
pages = "540-535",
number = "4",
volume = "47",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2257"
}
Zejak, R., Nikolić, I., Blecić, D., Radmilović, V.,& Radmilović, V. R.. (2013). Mechanical and microstructural properties of the fly-ash-based geopolymer paste and mortar. in Materiali in Tehnologije
Institute of Metals and Technology., 47(4), 535-540.
https://hdl.handle.net/21.15107/rcub_technorep_2257
Zejak R, Nikolić I, Blecić D, Radmilović V, Radmilović VR. Mechanical and microstructural properties of the fly-ash-based geopolymer paste and mortar. in Materiali in Tehnologije. 2013;47(4):535-540.
https://hdl.handle.net/21.15107/rcub_technorep_2257 .
Zejak, Radomir, Nikolić, Irena, Blecić, Dragoljub, Radmilović, Vuk, Radmilović, Velimir R., "Mechanical and microstructural properties of the fly-ash-based geopolymer paste and mortar" in Materiali in Tehnologije, 47, no. 4 (2013):535-540,
https://hdl.handle.net/21.15107/rcub_technorep_2257 .
