What is GFRP Rebar? Uses, Advantages, And Applications. What is GFRP Rebar? GFRP (Glass Fiber Reinforcing Polymer) Rebar is an alternative material to steel rebar. It is lightweight, has no corrosion, has superior tensile strength, and has high mechanical performance. Many construction materials are available in the market, like GFRP Rebar, CFRP, FRP, Steel rebar,...Continue Reading