Reinforced Concrete is a common building material for construction of facilities and structures. While concrete has high compressive strength, it has limited tensile strength. To overcome these tensile limitations, reinforcing bars are used in the tension side of concrete structures. Steel rebar has historically been used as an effective and cost-efficient concrete reinforcement. However, it is susceptible to oxidation (rust) when exposed to chlorides and certain other aggressive chemicals. Examples of such exposure include coastal areas, sites where road salts are used for deicing, and sites where aggressive chemicals and ground conditions exist. Where corrosion of rebar occurs, the resulting products have a significantly larger volume than the original bar. The concrete cannot sustain the tensile load developed from this volume increase, and eventually cracks and spalls, leading to further deterioration of the steel. The combination of ongoing deterioration and loss of reinforcement properties ultimately requires potentially significant and expensive outlays for repair and maintenance, and possibly the endangerment of the structure itself.

Steel rebar also conducts electricity and magnetic fields, attributes that are not desirable in many types of medical, nuclear, power generating, and electronic applications.

FRP/GRP rebars, with its superior tensile properties, built-in corrosion resistance, and inherent electromagnetic neutrality, offers a unique and economically feasible reinforcing bar.