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J. Korean Ceram. Soc. > Volume 50(5); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(5): 319.
doi: https://doi.org/10.4191/kcers.2013.50.5.319
C12A7계 슬래그와 석유 코크스 연소재를 사용한 수축저감재 및 모르타르의 특성
추용식, 박수현, 서성관, 박재완
한국세라믹기술원 에너지환경소재본부
Properties of Shrinkage Reducing Agent and Mortar with C12A7-based Slag and Petroleum Cokes Ash
Yong Sik Chu, Soo Hyun Park, Sung Kwan Seo, Jae Wan Park
Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.
ABSTRACT
In this study, petroleum cokes ash and $C_{12}A_7$-based slag were used for the shrinkage reduction and strength enhancement of mortar. The hydration properties of shrinkage reduction agents were analysed. The flow, change of length and compressive strength were experimented with mortar-added shrinkage reduction agents. As a result of this study, petroleum cokes ash : $C_{12}A_7$-based slag = 60~80% : 20~40% showed excellent results. In the case of mortar with 20% $C_{12}A_7$-based slag, the setting time and change of length were similar to Ref. mortar. The flow and compressive strength were superior to Ref. mortar. In the case of mortar with a 40% $C_{12}A_7$-based slag, the setting time was longer than Ref. mortar. The compressive strength of 3 days and 7 days were superior to Ref. mortar.
Key words: $C_{12}A_7$-based slag, Petroleum cokes ash, Shrinkage reducing agent, Hydration properties, Change of length
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