Abstract
In this paper the test results of a study on the bond behaviour of FRP bars to finegrained concrete are presented. Five series of concrete cylinders reinforced with basalt-reinforced polymer (BFRP) and glass fiber-reinforced polymer (GFRP) bars are tested in direct pullout conditions. As well as two series with steel bars are tested for comparison. For each specimen, the bond failure mode, the average bond strength, the initial bond stiffness, and the load–strain relationship curves and bar relative extension were analysed. Test results demonstrate the promise of using the FRP bars as an alternative to the steel bars in reinforcing concrete elements.
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