Effect of Intermediate Crack Debonding on the Flexural Strength of CFRP-Strengthened RC Beams

被引：0
作者：
Sungnam Hong
机构：
[1] Sungkyunkwan University,College of Engineering
来源：
Mechanics of Composite Materials | 2014年 / 50卷
关键词：
CFRP; effective strain; flexural strength; strength reduction factor; reinforced concrete;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The flexural strength of reinforced concrete (RC) beams strengthened with a carbon-fiber-reinforced polymer plate, which fails by intermediate crack debonding, is evaluated. To consider the effect of debonding at the interface between the concrete and the CFRP plate, due to a flexural crack at the midspan, on the flexural strength of the beams, a strength reduction factor is proposed. This factor is derived from the results of flexural tests by using the model of effective strains and is defined as the ratio of the debonding strain to the ultimate strain of the CFRP plate. The validity, accuracy, and efficiency of the factor is verified by comparing analytical results with experimental data. The results of this study revealed that the strength reduction factor proposed can be used to efficiently assess the flexural strength of CFRP-strengthened RC beams with intermediate crack debonding.
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页码：523 / 536
页数：13
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