Behaviour of Reinforced Concrete Beams Bonded with Glass Fibre Reinforced Polymer and Carbon Fibre Reinforced Polymer Sheets

Todupunoori Shiva Sai,G.A.V.S Sandeep Kumar,Dept Of Mechanical Engineering, Vnrvjiet, Hyderabad, India ,N Kiran Kumar,Dept Of Civil Engineering, Nec, Kovilpatti, India ,Cyril Thomas A,Dept Of Civil Engineering, Vnrvjiet, Hyderabad, India

doi:10.35940/ijeat.c4845.029320

Abstract

Concrete, a mixture of different aggregates bonded with cement, first developed around 150BC in Rome has been bedrock to the modern Infrastructure. It is used to build everything from roads, bridges, dams to sky scrapers. Strengthening concrete is traditionally done by using steels but the developments in technology in recent decades allowed to use fiber reinforced plastics which are externally bonded to concrete . Such composite materials offer high strength, low weight, corrosion resistance, high fatigue resistance, easy and rapid installation and minimal change in structural geometry. This study investigates the behavior of reinforced concrete beams bonded with fiber composites. A numerical study is conducted to study the behavior of RC beam under Static third point loading. Concrete beam specimens with dimensions of 150 mm width, 300 mm height, and 2600 mm length are modelled. These beams are externally bonded with Glass Fiber Reinforced Polymer (GFRP) sheets and Carbon Fibre Reinforced Polymer (CFRP) sheets. In present study, we examine the performance of reinforced concrete beams which are bonded with GFRP and CFRP sheets with various thicknesses (1, 2 & 3 mm) using ABAQUS in terms of failure modes, enhancement of load capacity, load-deflection analysis and flexural behaviour

Highlights

The conventional material used as a reinforcement to improve the tensile strength of concrete is steel
Present study carry out the flexure behaviour of Reinforced concrete beams bonded with glass fiber reinforced polymer sheets(GFRP) and carbon fibre reinforced polymer sheets(CFRP) of different thicknesses(Numerical study)
The beams with Glass Fiber Reinforced Polymer (GFRP) of greater thickness and beams with Carbon Fibre Reinforced Polymer (CFRP) of greater thickness are controlling higher deflections compared to RCC beam

Summary

INTRODUCTION

The conventional material used as a reinforcement to improve the tensile strength of concrete is steel. It has certain drawbacks such as low corrosive and alkali resistance,high handling costs due to its heavy wieght. The studies conducted using beams which are bonded with FRP’s showed a decrease in ductility which is caused due to linear elasticity of FRP material up to tensile rupture. To compensate this issue glass fibre reinforced

NUMERICAL STUDY

METHODOLOGY

RESULTS AND DISCUSSIONS

EXPERIMENTAL PROCEDURE

CONCLUSIONS