EFFECT OF CONFINEMENT OF CONCRETE COLUMN USING CARBON FIBRE WRAPPING

ABSTRACT Infrastructure development is raising its pace .In todays world, the retrofitting of structure is promoted rather demolishing of detorited building because changes in loading, use and design configuration, inferior material used or natural calamities. Strengthening or rehabilitation is due to lack of strength, stiffness, ductility and durability. CFRP is preferred over the convectional technique due to its light in weight, high temperature tolerance and high tensile strength. This paper makes experimental study of strengthening of concrete columns induced with porosity. A concrete column is casted with cavity due to high water cement ratios. then the wrapping is done with carbon fiber reinforced polymers. They offer a rapid technique with the potential to enhance the long term durability and compression strength of damaged columns due to confinement that is provided when fibers are oriented in the hoop direction. the main task of this project is to investigate the effects of additional strengthening of reinforced column . Key word: CFRP, wrapping, strengthening, retrofitting.