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Presentation
Bond stress versus slip model for CFRP plates bonded to concrete
Proceedings of the first Asia-pacific conference on FRP in structures: APFIS 2007
  • M KY Loo, University of New South Wales
  • S J Foster, University of New South Wales
  • Scott T Smith, University of Hong Kong
Document Type
Conference publication
Publication Date
1-1-2007
Abstract
Bond stress versus slip properties of externally bonded carbon fibre reinforced polymer (CFRP) used in repair and strengthening is fundamental input in any numerical or design model. The tests needed to obtain such data, however, are expensive in time of preparation and in the processing of the strain information collected. Previously, Foster and Khomwan (2005) had proposed a model where both the ultimate load and effective bond length are required for calculation of the bond-stress versus slip relationship for externally bonded FRPs. Based on finite element analysis results, a new relationship for the bond strength and effective bond length is presented for CFRP bonded plates. The finite element results show that the effective length is significantly influenced by the concrete compressive strength and, to a much lesser extent, the FRP stiffness and adhesive shear modulus.
Citation Information

Loo, MKY, Foster, SJ & Smith, ST 2007, 'Bond stress versus slip model for CFRP plates bonded to concrete', in ST Smith (ed.), Proceedings of the first Asia-pacific conference on FRP in structures: APFIS 2007, Hong Kong, China, 12-14 December, Department of Civil Engineering, Hong Kong University, Hong Kong, pp. 709-716. ISBN: 9789628014149.