Mechanics of fibre-reinforced polymer - Concrete interfaces

U. A. Ebead, Kenneth W. Neale

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


A finite element model is developed for analyzing the interfacial behaviour for fibre-reinforced polymer (FRP) laminates externally bonded to concrete prisms and subjected to direct shear. The element sizes of the FRP, adhesive, and concrete at the interface were chosen to be very small (0.25-0.5 mm) so that the debonding behaviour could be properly captured. The behaviour at the interface between the FRP composite and the concrete is modelled using truss elements connecting the FRP laminate to the concrete block. The truss elements incorporate a nonlinear bond stress-slip relationship controlled by several parameters related to the characteristics of the FRP composite, adhesive, and concrete. Results are given in terms of the load capacity of the joint and the stress and strain distributions in the FRP, at the interface, and in the concrete. In addition, the transfer lengths, as well as the force transfer between the FRP laminate and the concrete block, are investigated. Comparisons between the finite element results and available experimental data are presented.

Original languageEnglish
Pages (from-to)367-377
Number of pages11
JournalCanadian Journal of Civil Engineering
Issue number3
Publication statusPublished - Mar 2007
Externally publishedYes


  • Debonding
  • FRP-to-concrete bonded joints
  • Interface elements
  • Interfacial behaviour
  • Nonlinear finite element analysis
  • Transfer lengths

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • General Environmental Science


Dive into the research topics of 'Mechanics of fibre-reinforced polymer - Concrete interfaces'. Together they form a unique fingerprint.

Cite this