A Numerical Study to Investigate Shear Behavior of High-strength Concrete Beams Externally Retrofitted with Carbon Fiber Reinforced Polymer Sheets

This paper aims to numerically investigate the structural behavior of reinforced high-strength concrete (HSC) beams retrofitted by Carbon Fiber Reinforced Polymer (CFRP) sheets after cracking. Six pre-cracked HSC with CFRP having identical reinforcement are tested four-point loading until failure using Abaqus software, besides two others without as control beams. attached on three beam sides in shear span cracking under 60 % loading. Two distances, inclinations sheets, and number adopted parameters compare experimental results obtained previously. Test matched practical findings calibrate parameters. The show that retrofitting cracked raised its tolerance applied load a range (13-36) depending depth ratio arrangement sheets. When tends fail shear, effect is more pronounced than when it fracture flexure. inclined effective vertical ones. Furthermore, additional regarded clarify their effects beams: sheet width compressive strength. Altering does not affect tolerance, whereas increasing strength raises