Anchorages Effects on CFRP-to-concrete Bond Strength

In this study, the effect of the number of applied anchorages, arrangement, and types of anchorage on stress distribution between the CFRP strip and the concrete surface were studied. Two different anchoraging arrangements with two types of anchorage and three different numbers of anchorages are tested on 12 test specimens by keeping the concrete compressive strength and the CFRP strip bond length constant. In addition, two test specimens without any anchorages, totalling 14 specimens, were tested. It is observed that the anchorages had an impact on the stress distribution of the CFRP strips and increased the strength and the stiffness of the specimens. The specimens did not fail by peeling of the CFRP strips, instead they were ruptured at the point where the anchorages were situated.