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http://dx.doi.org/10.4191/KCERS.2005.42.1.037

Preparation of Lightweight Aggregate Using Glass Abrasive Sludge and Effects of Pores on the Aggregate Properties  

Chu, Yong-Sik (Ceramic and Building Materials Division, KICET)
Lee, Jong-Kyu (Ceramic and Building Materials Division, KICET)
Shim, Kwang-Bo (Department of Ceramic Engineering, Hanyang University)
Publication Information
Journal of the Korean Ceramic Society / v.42, no.1, 2005 , pp. 37-42 More about this Journal
Abstract
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 $0.8\pm$.
Keywords
Class abrasive sludge; Lightweight aggregate; Graphite; Pore;
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