Experimental Study on Flexural Behavior of Damaged Concrete Beams Strengthened with NSM-CFRP Strips

被引：0
|
作者：
Tong, Gusheng [1 ]
Wang, Yongxiang [1 ]
Wu, Qiulan [1 ]
Liu, Yongsheng [1 ]
机构：
[1] East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
来源：
ADVANCES IN CIVIL ENGINEERING II, PTS 1-4 | 2013年 / 256-259卷
关键词：
CFRP Strip; Near-surface mounted (NSM); Flexural strength; Reinforcement; Concrete beams;
D O I：
10.4028/www.scientific.net/AMM.256-259.1012
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In order to investigate the strengthen effect of different embedment lengths of the NSM strip on different damage levels. A series of tests were conducted on damaged reinforced concrete (RC) beams in flexure strengthened with near surface mounted (NSM) carbon- fiber-reinforced polymer (CFRP) strips, and initial cracking load, ultimate capacity, loading-deflection curves, and failure modes are examined and analyzed in the paper. The results showed that not only the initial cracking loads and ultimate capacities of the beams are significantly increased, but also the flexural stiffness of the beams in the yield and ultimate behavior stages are improved by using NSM-CFRP strips. The strengthen effect on lower damage level RC beams has no obvious difference with that on non-damaged RC beams. Anchoring of the strip end can increase the ultimate load capacities and decrease the ductility of RC beams. Debonding was found to be the primary failure mode in all cases.
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页码：1012 / 1016
页数：5
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