Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)
- Volume 7 Issue 4
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- Pages.104-112
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- 2012
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- 1975-5201(pISSN)
Analysis of Internal Structure in Alkali-Activated Fire Protection Materials Using Fly ash
플라이애시를 활용한 알칼리 활성화 내화성 마감재의 내부구조 분석
- Song, Hun (Korea Institute of Ceramic Engineering & Technology) ;
- Chu, Yong-Sik (Korea Institute of Ceramic Engineering & Technology) ;
- Lee, Jong-Kyu (Korea Institute of Ceramic Engineering & Technology)
- Received : 2012.12.07
- Accepted : 2012.12.26
- Published : 2012.12.31
Abstract
This study involves investigating the correlation between variation of internal structure and heating temperature of alkali-activated fire protection materials using fly ash. Dehydration and micro crack thermal expansion occur in cement hydrates of cementitious materials heated by fire. Internal structure difference due to both the dehydration of cement hydrates and pore solution causes and influences changes in the properties of materials. Also, this study is concerned with change in microstructure and dehydration of the alkali-activated fire protection materials at high temperatures. The testing methods of alkali-activated fire protection materials in high temperature properties are make use of TG-DSC and mercury intrusion porosimetry measurements. The study results show that the alkali-activated fire resistant finishing material composed of potassium hydroxide, sodium silicate and fly ash has the high temperature thermal stability. These thermal stability is caused by the ceramic binding capacity induced by alkali activation reaction.
플라이애시의 주요 성분은
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