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http://dx.doi.org/10.4334/JKCI.2014.26.6.723

Effects of the Reaction Degree of Ground Granulated Blast Furnace Slag on the Properties of Cement Paste  

Kim, Dong-Yeon (Dept. of Sustainable Architecture Engineering, Hanyang University)
Cho, Hyeong-Kyu (Dept. of Sustainable Architecture Engineering, Hanyang University)
Lee, Han-Seung (School of Architecture, Hanyang University ERICA)
Publication Information
Journal of the Korea Concrete Institute / v.26, no.6, 2014 , pp. 723-730 More about this Journal
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.
Keywords
ground granulated blast furnace slag; reaction degree; selective dissolution;
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