Behaviour of GFRP-strengthened RC cantilever slabs

Jinguang Teng, S. Y. Cao, L. Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

55 Citations (Scopus)


This paper presents an experimental study on reinforced concrete (RC) cantilever slabs bonded with glass fibre-reinforced polymer (GFRP) strips. Ten tests in three series were conducted on such slabs with different amounts of internal steel reinforcement and external FRP reinforcement. All FRP-strengthened test slabs were found to experience debonding of FRP strips from the slab, which started near the fixed end and propagated towards the free end, with the final failure mode being either complete debonding or FRP tensile rupture. The severity or likelihood of debonding is shown to depend on the thickness and width of the bonded FRP strips. It is further shown that debonding in these slabs does not have a serious detrimental effect on the ultimate strength, particularly when the FRP reinforcement ratio is low. Instead, it leads to a more ductile behaviour.
Original languageEnglish
Pages (from-to)339-349
Number of pages11
JournalConstruction and Building Materials
Issue number7
Publication statusPublished - 1 Oct 2001


  • Cantilever slab
  • Debonding
  • FRP
  • RC slab
  • Retrofitting
  • Strengthening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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