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Title |
Comparison of Measurement Methods and Prediction Models for Drying Shrinkage of Concrete
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Keywords |
콘크리트 건조수축 ; 측정 방법 ; 예측모델 ; 양생조건 concrete drying shrinkage ; measurement method ; prediction model ; curing condition |
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Abstract |
In this study, the drying shrinkage strains were compared of 24~60 MPa concrete specimens subjected to various curing conditions and measurement methods were compared. And, the applicability of the test and prediction methods were investigated. According to the results, drying shrinkage was significantly reduced in 28 day curing condition. In the sealed curing case, drying shrinkage strain from demolding time was identical to the one of the standard curing case for low strength concrete, however, drying shrinkage strain was greatly increased than the standard case for high strength case because of the effect of autogenous shrinkage. The efficient measurement was possible using the embedded gage for concrete drying shrinkage, but, the measured value by contact gage was lower than the one by the embedded gage. The test results agreed with EC2 model better than the other.
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