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http://dx.doi.org/10.5345/JKIBC.2019.19.1.001

Mechanical Properties of Alpha-Calcium Sulfate Hemihydrate Replaced Concrete for Application to Box Culvert Power Transmission  

Shin, Kyoung-Su (Corporate Research Institute, Yusung-tech Co., Ltd.)
Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam University)
Sung, Gil-Mo (Yusung-tech Co., Ltd.)
Woo, Sang-Kyun (Korea Electric Power Corporation Research Institute)
Chu, In-Yeop (Korea Electric Power Corporation Research Institute)
Lee, Bo-Kyeong (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korea Institute of Building Construction / v.19, no.1, 2019 , pp. 1-7 More about this Journal
Abstract
This study evaluated the mechanical properties of the alpha-calcium sulfate hemihydrate replaced concrete to reduce the cracking in a box culvert power transmission. After setting the replacement ratio of alpha-calcium sulfate hemihydrate at 0, 6, 9, 12, and 15%, the setting time, compressive strength, and drying shrinkage were measured and the microstructure and crystal structure were analyzed. As a result, it was confirmed that as the replacement ratio of alpha-calcium sulfate hemihydrate increased, the setting time decreased and the compressive strength declined. On the other hand, when the alpha-calcium sulfate hemihydrate was set with 15% of replacement ratio, about 60% reduction in the drying shrinkage was shown compared to that of ordinary Portland cement. Therefore, it is thought that when the concrete replacing the alpha-calcium sulfate hemihydrate is applied to a box culvert power transmission, the cracking reduction performance will be improved, and the improvement of compressive strength will be required.
Keywords
alpha-calcium sulfate hemihydrate; box culvert power transmission; setting time; compressive strength; drying shrinkage;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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