GRRP is rarely used as ordinary reinforcement to concrete structures for several reasons including its low young modulus. Did yo use it successfully as ordinary reinforcement (not prestressing)?
Dear Ayman Hussein Hosny Khalil,
Yes, I have used the mentioned by you material as ordinary reinforcement to concrete structures. In using it I can see one main problem - you cannot bend this type of reinforcement, and, therefore, it can be applied in the structural elements where there is no need to bend it (spread footings, slabs, etc.). Also, it can be used in lower an upper pedestals of seismic isolation rubber bearings in seismic isolated buildings.
Best regards,
Prof. Dr. Mikayel Melkumyan (Armenia)
Glass fiber reinforced polymer (GFRP) was used as an alternative material to the steel rebar. It is lightweight, no-corrosion, superior tensile strength, and high mechanical performance. Installation of the GFRP rebar is similar to steel rebar, but with less handling, transporting and storage problems.
Dear Ayman Hussein Hosny Khalil
These articles will help you find your answer:
Article Replacement of steel rebars by GFRP rebars in the concrete structures
Article Comparison of the behavior of GFRP reinforced concrete beams...
A particularly advantageous case of using GFRP reinforcement is the situation of long, straight, horizontal elements, where in classic reinforcement several reinforcement bars should be joined. GFRP rods can be very long.
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