Ten concrete column repair methods

The objective of this paper is to compare the characteristics and effectiveness of ten reinforced concrete column repair methods. The repair is performed in order to counterbalance a significant or total loss of carrying capacity. The methods presented are divided into two groups. The first deals with the strengthening of the entire column height, while the second focuses on the problem of damage and loss of strength on a localized section. They use different kinds of standard and polymeric concrete jackets, steel profiles and bonded, welded or bolted plate jackets and encasements. The paper concludes identifying the advantages and limitations of the various strengthening methods.