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http://dx.doi.org/10.5345/JKIC.2009.9.3.073

A Study on the Durabilities of High Volume Coal Ash Concrete by the Kinds of Coal Ash  

Choi, Se-Jin ((주)삼표 기술연구소)
Kim, Moo-Han (충남대학교 건축공학과)
Publication Information
Journal of the Korea Institute of Building Construction / v.9, no.3, 2009 , pp. 73-78 More about this Journal
Abstract
Coal ash is a by-product of the combustion of pulverized coal, and much of this is dumped in landfills. The disposal of coal ash is one of the major issues for environmental problems. In this paper, the effects of the kinds and replacement ratio of coal ash on the durabilities of concrete mixtures are investigated. Fine aggregate was replaced with coal ash(fly ash and bottom ash) in five different ratios, of 0%, 10%, 20%, 35%, and 50% by volume. Test results indicated that the compressive strength increased with the increase in fly ash percentage. The loss of compressive strength of bottom ash concrete mixes after immersion in sulphuric acid solution was less than in the control mix(BA0). In addition, the carbonation depth of fly ash concrete mixes was lower than the control mix(FA0).
Keywords
Coal ash; Fly ash; Bottom ash; Fine aggregate; Compressive strength; Carbonation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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