Experimental and Numerical Study on an Innovative Method for Strengthening Concrete Columns using Surface Steel Rebar and FRP Jacket

In this study, an Innovative a method called EBRGS is developed for strengthening RC columns. In this method Grooves are initially cut out along the lengths of the concrete specimens into which longitudinal reinforcement is planted ( as like as NSM method for attaching FRP rods in longitudinal slits) . And then FRP stirrups were used to enhance specimen’s confinement and specimen's load capacity . 16 cylindrical concrete specimens, with the measurement of 150 mm in diameter and 300 mm in height are manufactured, all specimens tested under static axial loading. It is found that the proposed EBRGS technique is capable of enhancing both the compressive strength and the ductility of the RC column specimens; steel rebars inside the grooves on the surface leads to an enhancement of 23% in compressive strength while the application of FRP stirrups along with surface rebar enhance both ductility and compressive strength by 41% relative the control specimen.