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Title |
A Fundamental Study on the Characteristics of Concrete with the Substitution Ratio of the Rapidly Cooled Steel Slag
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Keywords |
잔골재율 ; 유리석회 ; 수화 ; 급냉제강슬래그 ; 대체율 Fine aggregate ratio ; Free CaO ; Hydration ; Rapidly cooled steel slag ; Substitution ratio |
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Abstract |
When the steel slag is utilized to the concrete as the alternative fine aggregate, its use is limited as the concrete aggregate because of expansibility caused by much quantity of free CaO. So, this study is intended to examine the characteristics of the concrete which uses the rapidly cooled steel slag whose content of free CaO is sharply reduced by rapidly cooling the steel slag as the fine aggregate. Accordingly, by comparing and considering the results of the concrete slump loss test with the different substitution ratio and fine aggregate ratio of rapidly cooled steel slag, hydration by XRD and SEM analysis, compressive test by age, a length variation test and rapid chloride ion penetration test, the rapidly cooled steel slag’s proper substitution ratio and the fine aggregate ratio was derived.
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