Strain rate effect on bond stress–slip relationship between basalt fiber-reinforced polymer sheet and concrete

Reinforced concrete structures that are strengthened with fiber-reinforced polymers frequently suffer dynamic loadings. The success of this strengthening method depends on the effectiveness of the bond between the fiber-reinforced polymer sheet and concrete. Determining the bond behavior between the fiber-reinforced polymer and concrete substrate is an important issue in technology because the typical failure mode of fiber-reinforced polymer-to-concrete joints is debonding of the composite from the concrete substrate. Although numerous experimental studies have investigated this static bond behavior, experimental data concerning dynamic tests on maximum bond stress, ultimate load, and the bond–slip relationship of the interface between basalt fiber-reinforced polymer sheets and concrete under different strain rates are lacking. This study presents an experimental investigation of the dynamic performance between the basalt fiber-reinforced polymer sheet and concrete under different strain rates. Double-lap...