Fiber reinforced polymer (FRP) products are composite materials composed of high–strength fibers buried in resin matrix. These fibers offer strength, rigidity to the composite material produced and they usually undertake the bigger part of the load. The matrix plays its part in the interlocking of the fibers and enables tension transfer from fiber to fiber along shear stresses. Another duty of the matrix is fiber protection and prevention of fiber buckling.
- CTP (FRP-G): Reinforcing rebar made of fiberglass reinforced polymer; composed of fiberglass and resin (epoxy or polyester) entirely.
- BTP (FRP-B): Reinforcing bar made of fiber basalt reinforced polymer (BTP); composed of fiber basalt and resin (epoxy or polyester).
Corrosion of reinforcing steel is one of the serious problems of the construction industry; the corrosion issue has affected the country’s economy seriously. Both the reinforcing steel and concrete elements are damaged seriously due to corrosion in reinforcement within the concrete structures in contact with water and humidity. Hence the use of high corrosion resistant fiber reinforced polymers in concrete instead of reinforcing steel removes the restrictions due to corrosion in reinforced concrete.
We were late in catching up with the FRP technology, considering the excessive natural effects on reinforced concrete, especially the effect of sea droplets and salty underground waters in our country, which is surrounded by sea on its three sides.