Debonding strength and anchorage devices for reinforced concrete elements strengthened with FRP sheets

A brief overview of anchorage systems is dealt with introducing experimental tests on eight types of end fixing for reinforced polymers (FRP) sheets glued on RC elements. Particular test set-up and T-shaped specimens have been designed and realized to test mechanical fixings with steel or FRP plates glued or bolted, FRP bars or L-shaped fibers. The experimental results confirm that the various solutions have different performances in improving the debonding load. Numerical analysis confirm the reliability of debonding formulations available; furthermore a simple evaluation of anchorage effectiveness is proposed.