CFRP strengthening of rectangular steel tubes subjected to end bearing loads: Effect of adhesive properties

D. Fernando, T. Yu, J. G. Teng, X. L. Zhao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The end bearing capacity of a rectangular hollow section (RHS) steel tube can be substantially increased through local strengthening using bonded FRP plates. As failure of such a strengthened tube generally occurs by debonding of the FRP plates from the steel tube, the effectiveness of such strengthening depends significantly on the properties of the adhesive. This paper presents the results of an experimental study aimed at clarifying the effects of adhesive properties on the failure mode and the load-carrying capacity. The experimental programme included sixteen tests covering five different commercially available adhesives. Four different failure modes were observed in these tests: (1) adhesion failure; (2) cohesion failure; (3) combined adhesion and cohesion failure; (4) interlaminar failure of CFRP plates. The tests also revealed that an adhesive with a larger ultimate tensile strain leads to a greater load-carrying capacity of the strengthened RHS tube.

Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on FRP Composites in Civil Engineering, CICE 2008
EditorsMasoud Motavalli
PublisherEmpa-Akademie
ISBN (Electronic)9783905594508
Publication statusPublished - 1 Jan 2008
Event4th International Conference on FRP Composites in Civil Engineering, CICE 2008 - Zurich, Switzerland
Duration: 22 Jul 200824 Jul 2008

Publication series

NameProceedings of the 4th International Conference on FRP Composites in Civil Engineering, CICE 2008

Conference

Conference4th International Conference on FRP Composites in Civil Engineering, CICE 2008
CountrySwitzerland
CityZurich
Period22/07/0824/07/08

Keywords

  • Adhesives
  • CFRP
  • End bearing
  • RHS
  • Steel tubes
  • Strengthening

ASJC Scopus subject areas

  • Polymers and Plastics
  • Civil and Structural Engineering

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