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http://dx.doi.org/10.9726/kspse.2013.17.2.108

A Study on Bloating of Porous Ceramic  

Kim, Gui-Shik (Major of Mechanical Engineering, Jeju National University)
Kim, Hyeon-Gwan (Major of Mechanical Engineering, Pusan National University)
Jeong, Ji-Hyun (Major of Mechanical Engineering, Jeju National University)
Publication Information
Journal of Power System Engineering / v.17, no.2, 2013 , pp. 108-113 More about this Journal
Abstract
In this study, lightweight aggregate was made from basalt stone powder sludge. Clay and glass powder were respectively added from 0 to 20 wt% and from 0 to 100 wt%. The glass powder helped to form glassy phase which trapped generating gas in the materials. $CaCO_3$ helping bloating process was added from 0 to 10 wt%. It was possible to produce lightweight aggregate at range from $1150^{\circ}C$ to $1200^{\circ}C$. The specimen was heated in furnace at 1100, 1150 and $1200^{\circ}C$ for 15 min, respectively, to sinter aggregates. Chemical composition of materials were determined, and characteristics were analyzed, including specific gravity, water absorption. Lightweight aggregate which was heated at $1200^{\circ}C$ had specific gravity of $0.53g/cm^3$, water absorption of 3.08%, and this value satisfied KS L 8551 standard.
Keywords
Basalt; Stone Sludge; Bloating; Lightweight Aggregate;
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