New parameter design of GFRP RC beams

Fiber Reinforced Polymer (FRP) is an advanced composite material that has been identified as a potential new construction material. Since it is a non-corrosive material it may be used as reinforcement in concrete member. However, there is limited experience with the design and construction of GFRP reinforced concrete structures. This paper presents an investigation of reinforced concrete beams with Glass Fiber Reinforced Polymer (GFRP). Six concrete beams reinforced with GFRP and steel bars were cast and tested to study their flexural behavior. The results of this investigation proposed a reinforcement ratio and should guide structural engineers to a cost-effective design of GFRP reinforced concrete members. In addition, comparisons with steel reinforced concrete section were also investigated.

▸ A new value design with a 2% section of the GFRP is proposed. ▸ 15‰ GFRP deformation criterion is proposed for calculations, subjected to bending. ▸ It was found that GFRP reinforced beams are less marked by the creep phenomenon. ▸ Deflection variation under a constant loading depends on type reinforcement. ▸ The serviceability limit state could control the beam design in deflection.