抗剪加固FRP与混凝土界面粘结性能的试验研究

Translated title of the contribution: Bond behavior between shear strengthening FRP and concrete: An experimental study

G. M. Chen, D. Liu, Y. L. Li, Shi Wei Li, J. F. Chen*, H. B. Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this study, 21 small beam specimens with a pre-set through-crack were tested with FRP strips bonded to the sides to study the bond behavior between shear-strengthening FRP and concrete (referred to as "the interface" for simplicity hereafter). The test parameters included the bond length, width, thickness of FRP strip and the angle between fiber orientation and crack opening direction (referred to as "fiber tensile angle" θ hereafter) on the bond behavior of the interface. Test results showed that: 1) the small beam test setup with a pre-set crack is suitable for studying the bond behavior between FRP and concrete; 2) the bond length, width, and thickness of the FRP as well as the fiber angle have significant effects on the bond strength; 3) the distribution of FRP strains along the direction perpendicular to the fiber orientation (FRP width direction) is non-uniform; this is mainly attributed to the progressive debonding of the FRP strips in the width direction, with the FRP at the location of larger crack width debonding earlier.

Translated title of the contributionBond behavior between shear strengthening FRP and concrete: An experimental study
Original languageChinese
Pages (from-to)164-175
Number of pages12
JournalGongcheng Lixue/Engineering Mechanics
Volume32
Issue number7
DOIs
Publication statusPublished - 01 Jul 2015

Keywords

  • Bonded interface
  • Concrete
  • Debonding
  • Fiber angle
  • FRP
  • Shear strengthening

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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