This paper investigates the efficiency of a new jacketing system, the Steel-Reinforced Grout Spiral (SRGS) jacketing, at improving the compressive strength of concrete specimens. The proposed retrofitting system consists of spirally running steel cords combined with inorganic matrix. Twenty-four (24) unreinforced cylindrical specimens with a diameter of 100 mm and a height of 200 mm were confined with the use of SRGS jackets and tested under uniaxial compression. The parameters considered in current experimental investigation were the pitch of the spiral (3.18mm, 6.35mm, 0mm), the number of layers (1 and 2), and the concrete unconfined compressive strength (15.5MPa and 30.6MPa). All specimens were subjected to uniaxial compression and failed due to rupture of the steel cords. The new SRG jacketing system proved to be very efficient in increasing the compressive strength of concrete specimens (41% to 375% improvement), and therefore, can provide a cost effective method for retrofitting substandard concrete columns.