Strengthening of a Structural Beam with Carbon Fiber Material Applied with Polymeric Resin

Abstract

Strengthening weak structures or making structures to meet higher design loads, or due to construction defects, retrofitting of structures has long been carried out with different materials and techniques. Externally bonded steel plates, steel or concrete jacketing, and external post tensioning are some of the traditional retrofitting methods. Another method is the application of carbon fiber and polymeric resin systems (CFRP) to structural elements. CFRP materials are light, noncorroding, have high tensile strength and elastic modulus. In this study, composite laminates were tested and tensile stress, elastic modulus, and elongation values were obtained according to ASTM-D 3039. Based on the ACI 440.2R-17 guideline, these values were calculated and evaluated separately with the increase in the bending moment capacity of a reinforced concrete beam, pultrusion plates and hand lay-up CFRP laminates.