Experimental Study On Carbon Fibre Reinforced Polymer Wrapping On Rcc Beams

Abstract

Reinforced concrete is extremely used material in the creation. It’s being damaged due to various conditions such as ageing, weather condition, exposure to atmosphere, continuous increase in volume of concrete, corrosion of reinforcement, salt water interaction, temperature effect etc., Many times is not possible to replace such damaged structures with new structure as it requires lot of time investment and money regularly. Various methods have been used to minimise the problem but without success. In such cases strengthening of damaged structures becomes best possible option. The consolidation of the retrofitting of existing structures is carried out externally to the structural members using different techniques such as jacketing, retrofitting, guniting and shotcreting, and ferrocement. The study is carried out to increase the load carrying capacity of building by covering externally the beams elements with Carbon Fibre Reinforced Polymer (CFRP) is wrapped around the beam elements. The load carrying measurements is studied using one, two- and three-layer wraps on damaged and undamaged samples and compare with normal beam. Beam specimens of size 700mm x 150mm x150mm with M25 Grade concrete used in the experiment. The result of flexural strength and load-deflection of test is depicted in graphs for easy representation. The experimental results show that undamaged beams wrapped with Carbon Fibre Reinforced Polymer acts as better reinforcing material as well as used for retrofitting.