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J. Korean Ceram. Soc. > Volume 42(1); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(1): 37.
doi: https://doi.org/10.4191/kcers.2005.42.1.037
유리연마슬러지를 사용한 경량골재 제조 및 골재의 내부기공이 물성에 미치는 영향에 관한 연구
추용식, 이종규, 심광보1
요업(세라믹)기술원 세라믹건재본부
1한양대학교 세라믹공학과
Preparation of Lightweight Aggregate Using Glass Abrasive Sludge and Effects of Pores on the Aggregate Properties
Yong-Sik Chu, Jong-Kyu Lee, Kwang-Bo Shim1
Ceramic and Building Materials Division, KICET
1Department of Ceramic Engineering, Hanyang University
Lightweight aggregate was made using glass abrasive sludge and graphite in this study. This study tried to draw the correlation between lightweight aggregate's properties and internal pore. The precursor was made by added different graphite contents and was burned for 20 min. at $700^{circ}C$ and $800^{circ}C$. The volume change of aggregate was checked at before and after homing, and confirmed that the homing temperature effected more than expanding agent on volume change. The size and area of pore in aggregate increased according to the amount of expanding agent and homing temperature but it didn't bring about big effect above $1%$ of expanding agent. The absorbtion ratio, thermal conductivity and porosity have a high correlation, so each coefficient of correlation showed above $0.8pm$.
Key words: Class abrasive sludge, Lightweight aggregate, Graphite, Pore
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