Structural rehabilitation of concrete columns using confining with composite membranes has become a largely accepted technique. An extensive experimental program has been carried-out at the Faculty of Civil Engineering and Building Services, Iasi, aiming to evaluate the efficiency of the confining effect on concrete columns using fiber reinforced polymer (FRP) composite membranes. The results have established the effectiveness of wrapping solution, based on glass fiber reinforced polymer (GFRP) and carbon fiber reinforced polymer (CFRP) composites, in increasing both strength and ductility. A predictive equation has been proposed by the authors, based on experimental results, in good agreement with existing models.