Quasi-Static Mechanical Properties of a Novel Hybrid Composites Wrapped Rebar

A novel hybrid composites wrapped rebar is developed to overcome the brittleness of fiber reinforced polymer（ FRP） rebars.Theoretical and experimental studies are carried out on two types of rebars wrapped by FRP and hybrid composites,respectively. The stress-strain curves under quasi-static loads are given. The results show that FRP or hybrid composites outside rebars improve the ultimate tensile stress and the rebar in the core improves the ductility. It is also observed that hybrid composites wrapped layer can provide higher compatibility and lower interlaminar shear stress than FRP wrapped layer.