Bottom Ash와 혼합재료의 혼합비 및 양생방법에 따른 강도특성 분석
Analysis of Strength Characteristic for Bottom Ash Mixtures as Mixing Ratio and Curing Methods
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Bottom Ash is industrial by-product from a thermoelectric power plant. An immense quantities of bottom ash have increased eachyear, but most of them is reclaimed in ash landfill. In this study, in order to raise recycling rate of Bottom Ash, it is suggested tocure Bottom Ash (BA) mixtures mixed with cement, lime, Fly Ash (FA), and oyster shell (OS). Mixtures of 5∼20 % mixing ratiohad been cured for 1, 3, 7, 14, and 28 days using sealed curing and air-dry curing method. Unconfined compressive strength testwas conducted to determine strength and deformation modulus (E50) change for mixtures as mixing ratio and curing day, watercontents of mixtures were measured after test. As a result, strength and E50 were increased as mixing ratio and curing days, butvalues and tendencies of them appeared in different as kind of mixture, mixing ratio, curing method, and curing days. The resultsshowed the addition of cement, lime, Fly Ash, and oyster soil in Bottom Ash could improved strength and E50 and enlarge its fieldof being used.
Abstract
Bottom Ash is industrial by-product from a thermoelectric power plant. An immense quantities of bottom ash have increased eachyear, but most of them is reclaimed in ash landfill. In this study, in order to raise recycling rate of Bottom Ash, it is suggested tocure Bottom Ash (BA) mixtures mixed with cement, lime, Fly Ash (FA), and oyster shell (OS). Mixtures of 5∼20 % mixing ratiohad been cured for 1, 3, 7, 14, and 28 days using sealed curing and air-dry curing method. Unconfined compressive strength testwas conducted to determine strength and deformation modulus (E50) change for mixtures as mixing ratio and curing day, watercontents of mixtures were measured after test. As a result, strength and E50 were increased as mixing ratio and curing days, butvalues and tendencies of them appeared in different as kind of mixture, mixing ratio, curing method, and curing days. The resultsshowed the addition of cement, lime, Fly Ash, and oyster soil in Bottom Ash could improved strength and E50 and enlarge its fieldof being used.
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