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Journal of Polymer & Composites Original Research Special issue Open Access

Enhanced Durability and Performance of Reinforced Concrete Beams through CFRP Wrapping: An Experimental Investigation

  1. Ashok Kumar Suluguru Department of Civil Engineering, Malla Reddy Engineering College
  2. Brunda Ungarala Department of Civil Engineering, Malla Reddy Engineering College
  3. B. Vamsi Krishna Department of Civil Engineering, Malla Reddy Engineering College

Abstract

Globally, maintaining and repairing aging reinforced concrete structures poses a significant challenge for the construction industry. Numerous structures built before modern earthquake-resistant design codes lack adequate seismic resilience. Additionally, evolving service requirements often necessitate strengthening existing structures to handle increased loads. While past research explored the effectiveness of various Fiber Reinforced Polymer (FRP) wrappings under specific conditions, limited studies have comprehensively compared the performance of Carbon Fiber Reinforced Polymer (CFRP) compared to other options across diverse loading scenarios and structural geometries. This experimental study investigates the efficacy of CFRP wrapping on reinforced concrete beams with varying span-to-depth (L/D) ratios. Beams with L/D ratios of 4.0, 5.5, and 7.0 were retrofitted and rehabilitated with two layers of CFRP wrapping. Subsequent testing involved subjecting the beams to service load, ultimate load under static and cyclic loading conditions. The study meticulously analyzes the impact of CFRP wrapping on load-carrying capacity, stiffness improvement, and ductility behavior. The findings provide valuable insights into the potential of CFRP as a durable and performance-enhancing solution for rehabilitating reinforced concrete beams, enabling informed decision-making in real-world applications.

Keywords

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