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http://dx.doi.org/10.4334/JKCI.2006.18.1.091

Evaluation of Crack Width Based on the Actual Bond Stress-Slip Relationship in Structural Concrete Members  

Kim, Woo (Dept. of Civil Engineering, Chonnam National University)
Lee, Ki-Yeol (Dept. of Civil Engineering, Chonnam National University)
Kim, Jang-Hyun (Dept. of Civil Engineering, Chonnam National University)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.1, 2006 , pp. 91-100 More about this Journal
Abstract
This paper presents an analytical model for evaluation of crack widths in structural concrete members. The model is mathematically derived from the actual bond stress-slip relationships between the reinforcement and the surrounding concrete, and the relationships summarized in CEB-FIP Model Code 1990 are employed in this study together with the assumption of a linear slip distribution along the interface at the stabilized cracking stage. With these, the actual strains of the steel and the concrete are integrated respectively along the embedment length between the adjacent cracks so as to obtain the difference in the axial elongation. The model is applied to the test specimens available in literatures, and the predicted values are shown to be in good agreement with the experimentally measured data.
Keywords
bond stress; crack width; reinforced concrete; slip; stabilized cracking;
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