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The objectives of this study were twofold. The first was to investigate the compressive and flexural behaviors of small-sized concrete specimens strengthened with sprayed fiber reinforced polymer (SFRP), considering various fiber lengths, fiber volumes, and concrete strengths. The second was to evaluate the strengthening effects of SFRP on the flexural behaviors of largesized reinforced concrete beams. U-shaped strips and shear keys were applied to the test specimens to improve the interfacial bond resistance between the concrete surface and SFRP. POLYM. COMPOS., 36:722-730, 2015.

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Several sets of static and impact load tests are conducted to estimate the effects of using steel fibre and shear reinforcement on static and impact load resistances. Weights are dropped from a certain height to apply impact loads to the specimens. The performances of all the specimens are evaluated by comparing their load–deflection curves, crack patterns, or maximum numbers of drops before the tests were stopped. Moreover, the partial placement of fibre-reinforced concrete is also used to find ways to manufacture cost-effective concrete members, because fibre-reinforced concrete is mostly more expensive than normal concrete.

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