Comparison on Behaviour of Reinforced Concrete Column using GFRP and Steel Slag Materials
International Journal for Research in Applied Science and Engineering Technology
In order to make environment sustainable, the use of waste material in place of natural resources is one of the best alternatives. The utilization of industrial waste in concrete as partial replacement of coarse aggregates by steel slag on different proportions (0%, 10%, 20%......60%) studies are conducted on concrete mixes of M25 Grade. A large number of reinforced concrete (RC) structures that have been damaged due to corrosion of steel reinforcements are rehabilitated with fiber-reinforced
... fiber-reinforced polymer (FRP) composites. GFRP (Glass Fibre Reinforced polymer) sheet is used to cover the reinforcement in the column to attain more strength. The objective of the program is to investigate the comparison on behavior of the FRP sheet wrapped steel encased concrete columns, steel slag reinforced concrete column and conventional concrete column under concentric loading and also evaluate the progression of corrosion of steel in concrete after it has been treated with surface bonded FRP immersed in salt water. The experimental program was conducted on cubes, cylinders and column of Rectangular section of size 150mm x 150mm and height 400mm based on the height and cross section. The study on workability, setting time, density, compressive strength, ductility and buckling behaviour of column are performed and compared with the conventional column. The concrete cubes were tested for compressive strength at 7, 14, 28 days is obtained at room temperature. The diameter of the FRP sheet was 2 mm make the diameter to be 8 mm. The first group had two columns of Conventional concrete column, and the remaining three groups were reinforced with FRP sheet wrapped steel encased concrete columns and steel slag reinforced concrete column respectively. Test results indicated that FRP wrapped specimens had prolonged test life, decreased reinforcement mass loss, and reduced concrete chloride content .The performance of wrapped specimens was superior to that of control samples. It was concluded that GFRP wraps were able to confine concrete, slowing deterioration from cracking and spalling and inhibiting the passage of salt water.