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.
引用
下载
收藏
页码：1012 / 1016
页数：5
相关论文
共 50 条
  • [31] Experimental and numerical investigation on flexural behavior of concrete beams strengthened by different NSM tendons
    Huang, Jiao
    Xing, Guohua
    Chang, Zhaoqun
    COMPOSITE STRUCTURES, 2023, 313
  • [32] Flexural Performance and Failure Modes of NSM CFRP-Strengthened Concrete Beams: A Parametric Study
    Rami H. Haddad
    Oubaida A. Almomani
    International Journal of Civil Engineering, 2019, 17 : 935 - 948
  • [33] Flexural behavior of CFRP Strengthened Reinforced Concrete Beams
    Zhang, Hui
    Wu, Hongsheng
    Li, Xingquan
    APPLIED MECHANICS AND MATERIALS II, PTS 1 AND 2, 2014, 477-478 : 740 - +
  • [34] Flexural Performance and Failure Modes of NSM CFRP-Strengthened Concrete Beams: A Parametric Study
    Haddad, Rami H.
    Almomani, Oubaida A.
    INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 2019, 17 (7A) : 935 - 948
  • [35] Experimental and analytical investigation on flexural behaviour of RC beams strengthened with NSM CFRP prestressed concrete prisms
    Deng, Yu
    Li, Zhenzhen
    Zhang, Hexin
    Corigliano, Alberto
    Lam, Angus C. C.
    Hansapinyo, Chayanon
    Yan, Zhitao
    COMPOSITE STRUCTURES, 2021, 257
  • [36] Nonlinear 3D finite element modeling of RC beams strengthened with prestressed NSM-CFRP strips
    Omran, Hamid Y.
    El-Hacha, Raafat
    CONSTRUCTION AND BUILDING MATERIALS, 2012, 31 : 74 - 85
  • [37] Factors affecting flexural properties of RC beams strengthened with gradually prestressed NSM CFRP strips
    Gong, Shuang
    Su, Miao
    Yoshitake, Isamu
    Zhu, Cixiang
    Peng, Hui
    ENGINEERING STRUCTURES, 2024, 306
  • [38] Impact of Internal CFRP strips on the flexural behavior of heat-damaged reinforced concrete beams
    Al-Rousan, Rajai Z.
    HELIYON, 2023, 9 (06)
  • [39] Experimental study on flexural behavior of NSM CFRP-stone composite beams
    Liu, Yang
    Guo, Zixiong
    Liu, Baocheng
    Ye, Yong
    Jianzhu Jiegou Xuebao/Journal of Building Structures, 2011, 32 (03): : 75 - 81
  • [40] Experimental Study on Flexural Behavior of Reinforced Concrete Beams Strengthened with CFRP/SMA Composite Sheets
    Wang W.
    Zhou C.
    Zhang Y.
    Xue Y.
    Yin S.
    Li S.
    Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering, 2021, 29 (02): : 282 - 295
12345