Bond Behavior of Prestressed CFRP Strips-to-Concrete Joints Using the EBROG Method: Experimental and Analytical Evaluation

Fiber-reinforced polymer (FRP) composites are widely employed as externally bonded reinforcement (EBR) systems for strengthening reinforced concrete members. More recently, a new technique, referred to on grooves (EBROG), has been proposed, which is based using number of throughout the substrate enhance bond strength between FRP composite and concrete. This study investigates influence groove depth resulting debonding process that can be observed in prestressed carbon strips. To do so, prestressing force release tests were conducted series EBR EBROG strips specimens. Test results demonstrated fracture leading specimens developed significantly different manner with respect case Specifically, fractures ran through deeper layers became deeper. Numerical analyses also proposed scrutinize actual bond–slip law characterizing both It was shown trilinear appropriate simulating interface behavior