Review article

Reinforcement of brick walls is typical during restoration and reconstruction of buildings of the historical center of St. Petersburg. Strengthening of concrete columns is widely used at the reconstruction of industrial buildings. The study of technologies for strengthening piers and columns, as well as working out of combined technological solutions based on the taking account of the existing experience allows increasing the efficiency and reliability of reconstruction measures. To prevent the progression of physical wear of reinforced concrete columns, it is proposed at the wear up to 25% to carry out cementation of cracks and pasting with a carbon cloth. For brick piers, it is recommended to combine injection with a steel casing. Before obtaining data on the aging of composite materials during operation, it is proposed to combine reinforcement technologies with traditional methods, and for reinforced concrete columns, it should be recommended to refrain from using composites in case of significant physical wear. The authors have developed a specification for a new technology of reinforcing columns.