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
  • [41] Experimental study on flexural behavior of concrete beams strengthened with CFRP sheets bonded with an inorganic matrix
    Zheng, Wenzhong
    Chen, Weihong
    Wang, Mingmin
    Tumu Gongcheng Xuebao/China Civil Engineering Journal, 2010, 43 (04): : 37 - 45
  • [42] Experimental Investigation of Bond Fatigue Behavior of Concrete Beams Strengthened with NSM Prestressed CFRP Rods
    Wahab, Noran
    Soudki, Khaled A.
    Topper, Timothy
    JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2012, 16 (06) : 684 - 692
  • [43] FLEXURAL BEHAVIOUR OF RC BEAMS STRENGTHENED WITH NSM CFRP AND GFRP BARS - EXPERIMENTAL AND NUMERICAL STUDY
    Rankovic, Slobodan
    Folic, Radomir
    Mijalkovic, Marina
    REVISTA ROMANA DE MATERIALE-ROMANIAN JOURNAL OF MATERIALS, 2013, 43 (04): : 377 - 390
  • [44] Effects of Sustained Load and Freeze-Thaw Exposure on RC Beams Strengthened with Prestressed NSM-CFRP Strips
    Omran, H. Y.
    El-Hacha, R.
    ADVANCES IN STRUCTURAL ENGINEERING, 2014, 17 (12) : 1801 - 1816
  • [45] Experimental study on the flexural behavior of RC beams strengthened with CFRP laminates
    Yi, WJ
    Huang, HM
    FRP COMPOSITES IN CIVIL ENGINEERING, VOLS I AND II, PROCEEDINGS, 2001, : 399 - 405
  • [46] Flexural ductility of CFRP strengthened concrete beams - Experimental investigation
    Aboutaha, RS
    Wattanadechachan, P
    Kim, SH
    ART AND SCIENCE OF STRUCTURAL CONCRETE DESIGN: A SYMPOSIUM HONORING RICHARD W. FURLONG, 2003, 213 : 207 - 220
  • [47] Shear Strengthening and Repairing of Reinforced Concrete Deep Beams Damaged by Heat Using NSM-CFRP Ropes
    Al-khreisat, Ahmad
    Abdel-Jaber, Mu'tasime
    Ashteyat, Ahmed
    FIBERS, 2023, 11 (04)
  • [48] Experimental study on flexural behavior of damaged concrete beams strengthened with high ductility concrete under repeated load
    Zheng, Dongdong
    Kou, Jialiang
    Wei, Huanhuan
    Zhang, Tian
    Guo, Hongchao
    ENGINEERING STRUCTURES, 2023, 274
  • [49] Research on the Flexural behavior of Reinforced Concrete Beams Strengthened with CFRP
    Wei, Hua
    Zhang, Jiye
    Zhu, Dawei
    Peng, Zhiyuan
    Wang, Haijun
    ADVANCED ENGINEERING MATERIALS, PTS 1-3, 2011, 194-196 : 1781 - +
  • [50] Influence of elevated temperatures on the bond behaviour between concrete and NSM-CFRP strips
    Azevedo, Adriana S.
    Firmo, Joao P.
    Correia, Joao R.
    Tiago, Carlos
    CEMENT & CONCRETE COMPOSITES, 2020, 111
12345