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Title |
Carbonation Behavior of GGBFS Concrete Considering Loading Conditions and Cold Joint
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Authors |
황상현(Sang-Hyeon Hwang) ; 윤용식(Yong-Sik Yoon) ; 권성준(Seung-Jun Kwon) |
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DOI |
https://doi.org/10.4334/JKCI.2019.31.4.365 |
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Keywords |
탄산화; 콜드조인트; 고로슬래그 미분말; 압축응력; 인장응력 carbonation; cold joint; GGBFS; compressive load; tensile load |
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Abstract |
In this paper, carbonation behavior in cold joint concrete is analyzed considering binder types and tensile/compressive loading. Referred to the case without loading effect, the carbonation velocity coefficient decreases by -12.0~-4.7 % due to the pore densification in 30 % of the compressive loading condition. Regardless of binder type, GGBFS and OPC concrete with cold joint have insignificant variations of -1.7~5.8 % of carbonation velocity coefficient by loading conditions, however they have higher carbonation velocity coefficient than concrete without cold joint by 9.7~53.3 %, which shows that in cold joint areas, carbonation is accelerated. So, Consideration of that is more reasonable in durability design for cold joint concrete under concentrated loading.
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