FraMCoS 7 2010 Jeju, South Korea

Interfacial bond slip behavior between CFRP plates and concrete

This paper first investigates the interfacial bond behaviour in the shear test for CFRP laminates bonded to concrete. Two concrete compressive strengths are considered. For each concrete, the effective bond length is estimated using a linear regression analysis; the maximum…

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Year 2010
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Abstract

This paper first investigates the interfacial bond behaviour in the shear test for CFRP laminates bonded to concrete. Two concrete compressive strengths are considered. For each concrete, the effective bond length is estimated using a linear regression analysis; the maximum bond stresses and slips at different load levels are calculated from measured strains in the CFRP laminates. Also, a simple bond−slip model for the CFRP/concrete joints, developed from the shear tests, is proposed and used in a nonlinear finite element analysis of beams strengthened in flexure with bonded CFRPs. Comparisons are made between the analytical and experimental results for the CFRP-strengthened beams. Very good agreement between the numerical pre- dictions and test values is obtained.