ABSTRACT
Carbon fiber-reinforced polymers (CFRP) have been widely used for retrofitting and strengthening concrete structures over the past two decades. Concrete members strengthened by externally bonded CFRP sheets can fail prematurely in debonding between the interface of CFRP and concrete, not allowing full utilization of CFRP tensile strength. The objective is to study the effect of changing the width and thickness of the CFRP anchorage patches on the tensile strength and effective strain of the FRP reinforcement sheets under the same strengthening conditions. The results indicate that (1) The CFRP patch anchorage method used in the reinforcing scheme, the effective strain of the CFRP reinforcement sheets under the maximum tensile force is above 0.0038. (2) The CFRP patch anchorage method improves the tensile strength and effective strain of the CFRP reinforcement sheets, and increasing the width of the CFRP anchorage patches increases the tensile strength and effective strain of the CFRP reinforcement sheets.
