Evaluation of Ductility and Load Carrying Capacity in RC Beam Column in Exterior Joints Enhanced with FRP

One of the techniques of strengthening of the reinforced concrete (RC) structural members is through confinement with a composite enclosure. This external confinement of concrete by high strength fiber reinforced polymer (FRP) composite can significantly enhance the strength and ductility and will result in large energy absorption capacity of structural members. An experimental investigation of the behavior of retrofitted FRP wrapped exterior beam-column joints under seismic conditions is presented. Also, the experimental study on exterior beam-column joint of a multistory reinforced concrete building under the seismic has been analyzed using ANSYS software. Two specimens were cast and tested to failure during the present investigation. One is Control specimen test up to 70% of the ultimate load (without FRP), and another specimen test up to 70% of the ultimate Load (with one layer of FRP). The results show about 18% has been obtained by retrofitting with FRP sheets in load carrying capacity. Also an increase about 54% has been obtained by retrofitting with FRP sheets in cumulative ductility.