Strengthening of Distressed Reinforced Concrete Structural Member by Use of FRP Composites: A Review

In advance concrete technology Fiber Reinforced Polymer (FRP) is extensively used because of its good mechanical properties such as high stiffness, have good tensile strength, anti-corrosive, non-conducting etc. With passage of time Reinforced Concrete (RC) structural members would decrease its strength if adequate maintenance would not be provided, so these distressed RC structural member should require rehabilitation and proper maintenance or strengthening. Strengthening of these distressed RC members could be done either by the use of FRP either by Near surface mounted (NSM) technique or by Externally bonded (EB) technique. The gain of strength by application of FRP on a distressed RC member would depend upon type of FRP used like CFRP, GFRP, AFRP etc., also depends upon the orientation of FRP. This review focuses on the use of different type of FRP used for strengthening of a distressed RC member by enhancing its different strength parameters like flexural strength, axial load carrying capacity, shear strength, torsional strength, impact load and durability. This review also focuses on the rupture of FRP strengthened RC member.