Development and experimental study of CG-FRP hybrid rebar

A kind of hybrid CG-FRP rebar is developed through pultrusion, in which low-elongation carbon fibers and high-elongation glass fibers are blended in inter-laminar hybrid mode. The volumetric ratio of carbon fibers to glass fibers is chosen as 1:6 and the total fiber volumetric ratio of the CG-FRP rebar is 65%. The results from the standard tension test indicate that CG-FRP rebars exhibit an obvious yielding plateau during the test. The average 'yielding' strength and the average tensile strength of CG-FRP rebars are 1507. OMPa and 1676. 5MPa, respectively. The total amount of 'post-yielding' strain is about 23% of that in the elastic range. The average values of the modulus of elasticity and the Poisson's ratio are 88.01 GPa and 0.274, respectively. The study has revealed that CG-FRP rebars have distinct hybrid effect and good co operative workability, and that the modulus of elasticity and the tensile strength are also significantly in creased.