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http://dx.doi.org/10.4334/JKCI.2011.23.6.741

Comparison on Characteristics of Concrete Autogenous Shrinkage according to Strength Level, Development Rate and Curing Condition  

Yang, Eun-Ik (Dept. of Civil Engineering, Gangneung-wonju National University)
Shin, Jung-Ho (Dept. of Civil Engineering, Gangneung-wonju National University)
Choi, Yoon-Suk (Dept. of Civil Engineering, Gangneung-wonju National University)
Kim, Myung-Yu (Dept. of Civil Engineering, Gangneung-wonju National University)
Lee, Kwang-Myong (Dept. of Civil and Environmental System Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korea Concrete Institute / v.23, no.6, 2011 , pp. 741-747 More about this Journal
Abstract
In this study, autogenous shrinkage strain and prediction models of concrete specimens were compared with strength level and development rate. Also, concrete autogeneous shrinkage under various curing conditions was investigated. The results showed that autogeneous shrinkage increased as concrete strength increased. However, when the concrete strength was almost identical, the initial autogeneous shrinkage of OPC was larger than BFS, but the final autogeneous shrinkage of BFS was larger than OPC. Early wet curing reduced autogeneous shrinkage strain. Especially, when the early wet curing was applied for more than 24 hours, final autogeneous shrinkage was significantly reduced. The results showed that the existing EC2 models do not reflect concrete properties properly. Therefore, the revised model was proposed to better predict autogeneous shrinkage.
Keywords
concrete autogenous shrinkage; compressive strength; strength development rate; curing condition; prediction model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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