Abstract
AbstractReinforced concrete structures strengthened by fiber-reinforced polymer (FRP) always suffer dynamic loadings. Furthermore, the dynamic loadings are always added at the base of static loadings. The success of this strengthening method relies on the effectiveness of the bond of the FRP sheet to the concrete. Although numerous experimental studies have investigated this bond, experimental data concerning dynamic tests on basalt FRP (BFRP) sheets applied on concrete specimens under different initial static loadings are still lacking. This paper presents an experimental investigation on the dynamic bond behavior between the BFRP sheet and concrete under different initial static loadings (0, 30, 50, 80, and 100%) and displacement rate of 70 mm/s. Double-lap shear specimens were used for the tests. The results of the dynamic tests are reported and discussed to evaluate and compare the influence of initial static loading on the dynamic bond behavior between BFRP sheets and concrete. A nonlinear bond stre...
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