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Title |
Effects of the Reaction Degree of Ground Granulated Blast Furnace Slag on the Properties of Cement Paste
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Authors |
김동연(Dong-Yeon Kim) ; 조형규(Hyeong-Kyu Cho) ; 이한승(Han-Seung Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2014.26.6.723 |
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Keywords |
고로슬래그 미분말 ; 반응도 ; 선택적 추출법 ; ground granulated blast furnace slag ; reaction degree ; selective dissolution |
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Abstract |
The usage of Ground Granulated Blast Furnance Slag (GGBFS) has been increased recently. Studies on the cement hydration model incorporating GGBFS as well as the properties of cement paste done with GGBFS such as compressive strength, hydration products and hydration heat have been the subjects of many researches. However, studies on the reaction degree of GGBFS that affect the properties of cement paste incorporating GGBFS are lacking globally and specially in Korea. Thus, in this study, the reaction degree of GGBFS using the method if selective dissolution, compressive strength, the amount of chemical bound water and Ca(OH)2 were measured and analysed in accordance with water-binder ratio, replacement ratio of GGBFS, and curing temperature. The results show that the reaction degree of GGBFS, the amount of chemical bound water and Ca(OH)2 in cement paste with GGBFS were higher in conditions where the replacement ratio of GGBFS was low and both water-binder ratio and curing temperature were high. Finally, the reaction degree of GGBFS was achieved at a value between 0.3∼0.4.
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