Glass fiber reinforced polymer (GFRP) rebar is made of continuous glass fibers embedded in a polymeric resin matrix and additives. Composite materials are developed for use in many structural applications with the major advantages of being a lightweight and corrosion-free alternative to steel reinforcement. Besides, GFRP rebar offers high tensile strength, stiffness-to-weight ratio, solid resistance to corrosive chemicals, electromagnetic neutrality, excellent fatigue properties, and control over thermal expansion.