@article{ART002537789},
author={Minjeong Kim and Yooteak Kim},
title={Effect of Si sludge addition on the properties of lightweight geopolymers},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2019},
volume={29},
number={6},
pages={257-263},
doi={10.6111/JKCGCT.2019.29.6.257}
TY - JOUR
AU - Minjeong Kim
AU - Yooteak Kim
TI - Effect of Si sludge addition on the properties of lightweight geopolymers
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2019
VL - 29
IS - 6
PB - The Korea Association Of Crystal Growth, Inc.
SP - 257
EP - 263
SN - 1225-1429
AB - Lightweight geopolymers were fabricated with non-milled IGCC slag and Si sludge as a bloating material. The relationship between addition amount of Si sludge and physical/chemical properties of lightweight geopolymers was investigated. When the geopolymers were made by mixing IGCC slag, alkali activator, and more than 10 wt.% Si sludge,the temperature of the geopolymer pastes reached higher than 130°C in a few minutes. This exothermic reaction accelerated the geopolymer reaction; however, it was difficult to make geopolymer specimens because of a rapid bloating reaction. Both compressive strength and density of the specimens tend to decrease with an addition of Si sludge; however, there was little difference in both compressive strength and density with addition of Si sludge more than 10 wt.%. Because there was a limit to get low density geopolymers by simply increasing the addition of Si sludge, the control of pore size and distribution of geopolymer is more important by controlling flow rate of the paste through the control of W/S ratio. Therefore, it is important to control process conditions, appropriate W/S ratio for the bloating than the control of Si sludge. The optimum W/S ratio was 0.20 for the addition of Si sludge less than 30 wt.% and W/S ratio should be more than 0.28 for the addition of Si sludge more than 30 wt.%, although there was no practical application in fact.
KW - Lightweight geopolymer;Si sludge;Compressive strength;IGCC slag
DO - 10.6111/JKCGCT.2019.29.6.257
ER -
Minjeong Kim and Yooteak Kim. (2019). Effect of Si sludge addition on the properties of lightweight geopolymers. Journal of the Korean Crystal Growth and Crystal Technology, 29(6), 257-263.
Minjeong Kim and Yooteak Kim. 2019, "Effect of Si sludge addition on the properties of lightweight geopolymers", Journal of the Korean Crystal Growth and Crystal Technology, vol.29, no.6 pp.257-263. Available from: doi:10.6111/JKCGCT.2019.29.6.257
Minjeong Kim, Yooteak Kim "Effect of Si sludge addition on the properties of lightweight geopolymers" Journal of the Korean Crystal Growth and Crystal Technology 29.6 pp.257-263 (2019) : 257.
Minjeong Kim, Yooteak Kim. Effect of Si sludge addition on the properties of lightweight geopolymers. 2019; 29(6), 257-263. Available from: doi:10.6111/JKCGCT.2019.29.6.257
Minjeong Kim and Yooteak Kim. "Effect of Si sludge addition on the properties of lightweight geopolymers" Journal of the Korean Crystal Growth and Crystal Technology 29, no.6 (2019) : 257-263.doi: 10.6111/JKCGCT.2019.29.6.257
Minjeong Kim; Yooteak Kim. Effect of Si sludge addition on the properties of lightweight geopolymers. Journal of the Korean Crystal Growth and Crystal Technology, 29(6), 257-263. doi: 10.6111/JKCGCT.2019.29.6.257
Minjeong Kim; Yooteak Kim. Effect of Si sludge addition on the properties of lightweight geopolymers. Journal of the Korean Crystal Growth and Crystal Technology. 2019; 29(6) 257-263. doi: 10.6111/JKCGCT.2019.29.6.257
Minjeong Kim, Yooteak Kim. Effect of Si sludge addition on the properties of lightweight geopolymers. 2019; 29(6), 257-263. Available from: doi:10.6111/JKCGCT.2019.29.6.257
Minjeong Kim and Yooteak Kim. "Effect of Si sludge addition on the properties of lightweight geopolymers" Journal of the Korean Crystal Growth and Crystal Technology 29, no.6 (2019) : 257-263.doi: 10.6111/JKCGCT.2019.29.6.257
