Abstract
AbstractDespite the extensive research on the debonding behavior of fiber-reinforced polymer (FRP) strengthening systems, no standard methodology has been established on its experimental characterization. To assess the performance and reliability of small-scale testing on near-surface mounted (NSM) FRP strengthening systems, an experimental program was carried out on a series of nine NSM FRP strengthening systems (bars and strips), in the framework of an international round robin testing (RRT). Eleven laboratories and seven manufacturers and suppliers participated in this extensive international exercise, which regarded both NSM and EBR FRP strengthening systems. The experimental results are discussed and compared in this paper in order to investigate (1) the bond behavior of NSM strips and bars, (2) the influence of alternative single-bond or double-bond shear pulling setups adopted by the participating laboratories, and (3) the influence in concrete strength due to different constituent materials betwee...
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