APPLICATION OF FIBER-REINFORCED POLYMERS FOR STRUCTURAL STRENGTHENING OF CONCRETE SLABS

Abstract

The application of Fiber-Reinforced Polymers (FRP) in the structural strengthening of concrete slabs has emerged as an innovative and efficient solution to enhance the performance, durability, and load-carrying capacity of existing structures. This study reviews the use of different FRP materials, including Carbon Fiber-Reinforced Polymer (CFRP), Glass Fiber-Reinforced Polymer (GFRP), and Aramid Fiber-Reinforced Polymer (AFRP), focusing on their mechanical properties, bonding behavior, and effectiveness in improving flexural and shear strength. FRP laminates, sheets, and plates are externally bonded to the tension zone of concrete slabs to control cracking, delay failure, and increase stiffness and ductility. The research highlights the advantages of FRP over conventional strengthening methods, such as corrosion resistance, lightweight nature, high tensile strength, and ease of installation. It also discusses factors affecting the strengthening performance, including adhesive type, surface preparation, fiber orientation, and environmental conditions. Overall, the study concludes that FRP strengthening significantly improves structural integrity, extends service life, and provides a sustainable and cost-effective approach to concrete rehabilitation and retrofitting.