Experimental studies on bond behaviour of high strength CFRP plates

This paper presents a detailed study on the bond behaviour between high strength CFRP plates and concrete based on double shear tests of 30 bond specimens. Studies show that bond strength increases while increasing the concrete strength, or decreasing the width of CFRP plates; structural adhesives have a significant influence on the bond strength; bond behaviour between CFRP plates and concrete can be improved by rational mechanical anchorages. In addition, a theoretical bond strength model modified from the Niedermeier’s model is proposed for the high strength CFRP plate-to-concrete joints.