Enhancing Flexural Performance of RCC Beams Using Finite Element Analysis and Fiber-Reinforced Polymer (FRP)

The contemporary practice of externally retrofitting deteriorated reinforced concrete elements to restore their strength is widely recognized. Various methods are employed for externally retrofitting structural members, including section enlargement, external plate bonding, external post-tensioning, grouting, and the utilization of fiber-reinforced polymer (FRP) composites, based on the extent of damage. This study focuses on the application of FRP composites, specifically fabric/tapes adhered with adhesive, to enhance the integrity of structural elements exhibiting crack-like defects. Beyond just retrofitting, this technique also offers the potential to augment strength and enhance load-bearing capacity without the need for increased section dimensions. Fabrics composed of carbon, glass, and basalt fibers are employed for this external reinforcement, each yielding distinct outcomes according to their inherent characteristics, load magnitude and type, fiber fabric type, and wrapping patterns. This investigation specifically examines the application of Basalt Fiber Reinforced Polymer wrapping in different patterns to structural reinforced concrete beams. These beams are subjected to a four-point loading configuration to analyze the performance of basalt fibers as a retrofitting material. Additionally, numerical models of these beams are generated using Abaqus software for Finite Element Analysis. A subsequent comparison is conducted between experimental outcomes and FEA results, involving Load-Deflection graphs and the assessment of tensile damage in the concrete beams.