Experimental study of the failure of fiber-reinforced plastic rebar used in concrete structures

The failure of fiber-reinforced plastic rebar (FRP Rebar) used in concrete structures such as roads and bridges as strengthening bars is studied experimentally in the paper. How to grip a FRP Rebar is very important. The experimental results show that different methods of gripping it have great influence on its ultimate strength. In addition, the ultimate strength of a FRP Rebar is calculated by using the statistical failure theory based on the weighting distance local load-sharing rule and the concept of the element of fiber column. The theoretical results are closer to the experimental ones.