ABSTRACT
Failure of carbon fiber reinforced polymer (CFRP) strengthening systems when applied to reinforced concrete (RC) planks is typified by debonding of the FRP materials from the soffit of the RC plank. Various types of debonding can occur including intermediate crack induced (IC) debonding, end interfacial debonding and cover separation. These modes of failures are usually brittle and premature resulting in underutilisation of the FRP materials. To prevent these types of debonding, current standards impose strict limitations on the maximum level of strains achieved in design. Researchers have investigated several systems of anchorages that can stop or delay these types of debonding resulting in a better utilisation of the FRP materials. This paper explores a method of anchoring FRP sheets and laminates using hybrid anchors. Experimental tests have shown that using hybrid anchors can result in a significant increase in load and strain when compared against unanchored specimens. These anchors are also capable of changing the brittle mode of failure of FRP debonding to a ductile one.
