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Title |
Characteristics of Shrinkage on Concrete using Electric Arc Furnace Slag as Coarse Aggregate
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Authors |
최효은(Hyo-Eun Choi) ; 최소영(So-Yeong Choi) ; 김일순(Il-Sun Kim) ; 양은익(Eun-Ik Yang) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.1.125 |
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Keywords |
자기수축; 건조수축; 전기로 산화 슬래그; 수축 예측모델 Autogenous Shrinkage; Drying Shrinkage; Electric arc furnace slag; Prediction models of shrinkage |
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Abstract |
The causes of concrete shrinkage are very diverse, in particular, aggregates impact the characteristics of shrinkage in concrete by constraining the shrinkage of cement paste. Meanwhile, owing to the lack of natural aggregate, various alternative aggregates are being developed, and their application in concrete also becomes more diverse. This study aimed to experimentally evaluate the drying and autogenous shrinkage in concrete that was composed of electric arc furnace slag as coarse aggregates. And, the results were compared with prediction models. From the results, the application of electric arc furnace slag can reduce the drying and autogenous shrinkage. In particular, autogenous shrinkage is greatly decreased. The predictions using GL2000 for drying shrinkage and Tazawa model for autogenous shrinkage were similar to the experimental results. However, the most prediction models do not consider the impact of aggregates, hence, the new prediction model should be developed or improved.
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