Assessment of Flexural–Shear Behavior of Reinforced Concrete Beams Strengthened with Hybrid CFRP–GFRP U-wrap: Experimental and Numerical Approach

Author(s)	K Jagan Mohan Reddy, Kallamadi Naveen Reddy
Country	India
Abstract	Because of deterioration, higher stress conditions, or poor initial design, reinforced concrete (RC) beams frequently need to be strengthened. Because of their great strength, portability, and simplicity of usage, fiber-reinforced plastics have emerged as a preferred alternative. A hybrid CFRP–GFRP U-wrap system is a promising method for enhancing structural performance because it combines the flexibility and affordability of glass fibers with the high tensile strength of carbon fibers. This method improves overall durability, controls fracture development, and increases the flexural-shear capacity of beams. When compared to unstrengthened beams, experimental evaluation of RC beams strengthened using the hybrid U-wrap system reveals a discernible increase in load-carrying capacity, stiffness, and resistance to crack propagation. These conclusions are further supported by numerical analysis, which accurately predicts the observed structural behavior. For practical applications in structural rehabilitation and retrofitting of existing concrete structures, the combination of CFRP and GFRP offers a balanced and effective strengthening solution.
Keywords	Cfrp–Gfrp, Glass Fibers, Flexural-Shear, Retrofitting.
Field	Engineering
Published In	Volume 7, Issue 4, April 2026
Published On	2026-04-07

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