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http://dx.doi.org/10.14190/JRCR.2016.4.4.418

Study on Characteristics of Fine Bottom Ash Based Geopolymer Mortar  

Lim, Gwi-Hwan (Department of Civil Engineering, Daejin University)
Lee, Jeong-Bae (Department of Civil Engineering, Daejin University)
Jeong, Hyun-Kyu (Department of Civil Engineering, Daejin University)
Kim, Seong-Soo (Department of Civil Engineering, Daejin University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.4, no.4, 2016 , pp. 418-424 More about this Journal
Abstract
This study is an experimental study on the recycling of bottom ash in coal ash discharged from a thermal power plant. Bottom ash has limited research on recycling because it has more porous and higher water absorption ratio than fly ash. In this paper, the bottom ash was pulverized to a specific surface area of $4,000cm^2/g$ in order to use as a binder, and the flow, compressive strength test and microstructure analysis of the bottom ash based geopolymer mortar were performed. The flow measurement results of the geopolymer mortar showed that the flow rate was improved by increasing mixing water as the molar concentration of activator was increased. Compressive strength increased with increasing curing temperature and molar concentration. Through the microstructure analysis, we could confirm the geopolymer gel produced by the reaction of the condensation polymerization. It is considered that it is possible to make the bottom ash based geopolymer concrete through proper molar concentration of activator and high temperature curing.
Keywords
Recycling; Bottom ash; Geopolymer; Temperature curing; Activator;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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