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.
引用
收藏
页码：523 / 536
页数：13
相关论文
共 50 条
  • [1] Effect of Intermediate Crack Debonding on the Flexural Strength of CFRP-Strengthened RC Beams
    Hong, Sungnam
    MECHANICS OF COMPOSITE MATERIALS, 2014, 50 (04) : 523 - 536
  • [2] A new flexural strength model of CFRP-strengthened RC beams with intermediate crack induced debonding failure
    Li, Guibing
    Zhang, Aihui
    Jin, Weiliang
    Xiao, Yifei
    Li, Huaying
    COMPOSITE STRUCTURES, 2023, 308
  • [3] Experimental Investigation on Effective Bond Length of Flexurally CFRP-Strengthened RC Beams Failed by Intermediate Crack Debonding
    Li, Guibing
    Zhang, Aihui
    Jin, Weiliang
    ADVANCES IN STRUCTURES, PTS 1-5, 2011, 163-167 : 977 - +
  • [4] Effect of preload level and shear-to-flexural capacity on debonding failure of CFRP-strengthened RC beams
    Engineering Structure Institute, Zhejiang University, Hangzhou 310027, China
    不详
    Jianzhu Jiegou Xuebao, 2007, SUPPL. (213-218):
  • [5] Effect of basic design parameters on IC debonding of CFRP-strengthened shallow RC beams
    Al-Saawani, Mohammed A.
    El-Sayed, Ahmed K.
    Al-Negheimish, Abdulaziz I.
    JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 2015, 34 (18) : 1526 - 1539
  • [6] Shear behavior of flexural CFRP-strengthened RC beams with crack-induced delamination: Experimental investigation and strength model
    Mukhtar, Faisal M.
    Shehadah, Mohammed E.
    COMPOSITE STRUCTURES, 2021, 268
  • [7] Fatigue Life Prediction of CFRP-Strengthened RC Beams with Flexural Crack under Hygrothermal Environments
    Guo, Xinyan
    Cui, Hangyue
    Wang, Yilin
    Chen, Zhanbiao
    MATERIALS, 2022, 15 (13)
  • [8] Strength model for intermediate flexural crack induced debonding in RC beams and slabs
    Teng, JG
    Smith, ST
    Yao, J
    Chen, JF
    FRP COMPOSITES IN CIVIL ENGINEERING, VOLS I AND II, PROCEEDINGS, 2001, : 579 - 587
  • [9] Shear behavior of flexural CFRP-strengthened RC beams with crack-induced delamination: Experimental investigation and strength model
    Mukhtar, Faisal M.
    Shehadah, Mohammed E.
    Composite Structures, 2021, 268
  • [10] Flexural performance of RC beams strengthened with HB CFRP plates: Experimental study and theoretical model based on the intermediate crack debonding
    Codina, A.
    Torres, L.
    D'Antino, T.
    Baena, M.
    Barris, C.
    CONSTRUCTION AND BUILDING MATERIALS, 2025, 458
12345