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http://dx.doi.org/10.14190/JRCR.2020.8.1.1

Properties of Fresh State and Characteristics of Shrinkage in Concrete Containing Low Fineness GGBFS  

Kim, Tae-Hoon (Department of Civil and Environmental Engineering, Hannam University)
Yoon, Yong-Sik (Department of Civil and Environmental Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.1, 2020 , pp. 1-7 More about this Journal
Abstract
GGBFS(Ground Granulated Blast Furnace Slag) is one of the most actively used mineral admixtures with excellent long-aged strength and chloride diffusion resistance. Unlike Standard covering GGBFS in Japan and the U.K., the domestic standard for GGBFS does not contain low fineness of GGBFS under 4000 grade. In this paper, several basic tests are carried out for the concrete with 3,000 grade GGBFS concrete and ternary blended concrete for reducing hydration heat by mixing 4,000 grade GGBFS and fly ash, such as fresh concrete properties, compressive strength, and shrinkage properties. The air content and slump between the ternary blended concrete and the concrete with low-fineness GGBFS showed the similar level, and the results of difference in setting time from them were less than 20 minutes, showing no significant difference. In the evaluation of compressive strength and shrinkage characteristics, the ternary blended concrete showed lower long-aged strength and higher shrinkage than the low-fineness GGBFS concrete.
Keywords
GGBFS; Low fineness; Fresh concrete; Shrinkage properties;
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