Structural performance of RC columns retrofitted with steel-reinforced grout jackets under combined axial and lateral loading

• Experimental investigation of full-scale SRG jacketed columns under seismic loading. Alternative jackets were used differing in textile density and number layers. jacketing modified poor response from brittle bar buckling to flexural. Sufficient displacement ductility & low strength degradation observed up 5% drift. The effectiveness steel-reinforced grout (SRG) improving the structural performance deficient reinforced concrete (RC) is experimentally investigated this study. Four cantilever designed following old construction practice (pre-1970s) southern Europe. Due lack adequate detailing, susceptible failure when subjected combined axial loading cyclic lateral reversals, simulating Three alternative configurations applied layers Ultra High Tensile Strength Steel (UHTSS) textile. test results demonstrated efficiency modify with detailing ductile by substantially their overall performance. Finally, code formulations assess columns.