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http://dx.doi.org/10.5345/JKIBC.2019.19.5.421

Effect of Curing Condition on the Chloride ion Diffusion Coefficient in Concrete with GGBFS  

Park, Jang-Hyun (Department of Architectural Engineering, Hanyang University)
Lee, Han-Seung (Department of Architecture & Architectural Engineering, Hanyang University ERICA)
Publication Information
Journal of the Korea Institute of Building Construction / v.19, no.5, 2019 , pp. 421-429 More about this Journal
Abstract
The changes in the resistance to chloride ingress of concrete using a ground granulated blast furnace slag (GGBFS) according to curing conditions were examined. The curing conditions were divided in air-dry curing and under-water curing. Three concrete mixures with the GGBFS replacement ratio of 0%(control), 30%, and 60% were prepared. For tests, evaluations of concrete compressive strength, and chloride ion diffusion coefficient were performed. As the GGBFS replacement ratio increased, the concrete compressive strength of the in air-dry cured specimens decreased compared to under-water cured specimens. When the chloride ion diffusion coefficient was measured, the chloride ion diffusion coefficient decreased as the GGBFS replacement ratio increased. However, the diffusion coefficient of the in air-dry cured specimen was increased up to 111% compared with the under-water cured specimen.
Keywords
concrete; curing condition; ground granulated blast furnace slag; chloride ion; diffusion coefficient;
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