Experimetal study on the FRP-concrete bond behavior under repeated loadings

J. Y. Lee, ChongKu Yi, Y. G. Cheong

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, the effects of repeated loads on the FRP-concrete bond strength were investigated experimentally by direct pull out tests according to CSA S806-02. A conventional reinforcing steel bar and two types of glass-fiber-reinforced plastic (GFRP) bars were embedded in concrete and tested under four different loading patterns. The bond strength-slip curves of the bars were obtained and analyzed. The results showed that the maximum bond strengths under the repeated loads differed from those obtained under monotonic ones. In addition, noticeable differences in degradation of the bond strength with respect to the magnitude of slip were observed between the different bar types tested. On the basis of an image analysis of failure surfaces, they were attributed to the different bond failure mechanisms associated with the steel and GFRP bars.

Original languageEnglish
Pages (from-to)609-618
Number of pages10
JournalMechanics of Composite Materials
Volume45
Issue number6
DOIs
Publication statusPublished - 2009 Nov 1

Fingerprint

Concretes
glass fiber reinforced plastics
Glass fiber reinforced plastics
Slip
Plastics
Steel
Fiber
slip
Failure Mechanism
steels
Image Analysis
Monotonic
Steel fibers
Bond strength (materials)
Degradation
image analysis
Image analysis
Curve
degradation
curves

Keywords

  • Bond failure surface
  • Bond strength
  • Concrete strength
  • Glass-fiber-reinforced polymer bars

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Biomaterials
  • Polymers and Plastics
  • Condensed Matter Physics
  • Mathematics(all)

Cite this

Experimetal study on the FRP-concrete bond behavior under repeated loadings. / Lee, J. Y.; Yi, ChongKu; Cheong, Y. G.

In: Mechanics of Composite Materials, Vol. 45, No. 6, 01.11.2009, p. 609-618.

Research output: Contribution to journalArticle

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