Abstract

Purpose: modern scientific and technical developments for repairing concrete structures and lined water supply structures, including those for which patents for inventions have been obtained are considered. Some of the considered technical solutions can be attributed to innovative developments. Materials and Methods: the known methods of repairing concrete structures of water-supply structures and linings were studied as research materials, their advantages and disadvantages were noted. Particular attention is paid to technical solutions for which patents for inventions have been obtained. Results: damage repair of concrete linings of water-supply structures in the form of cracks and destruction of expansion joints is most common, since at the same time water permeability decreases, and the bearing capacity increases. Repair by surface impregnation method is carried out to strengthen the protective layer of reinforced concrete structures to a depth of 15–35 mm. Repair of local disturbances is carried out manually at a depth of destruction less than 0.1 m. Areal disturbances with an area of more than 1 m² and a destruction depth of more than 0.1 m are recommended to be repaired mechanically. Invention no. 1477877 proposes a method for repairing construction structures and facilities, which is carried out by the method of pressure injection of repair compounds, they increase the quality of repair due to the reliability of defective zones filling. Innovative methods of facing repairing include sealing damage by injecting bentonite mortar during data remote transmission from humidity sensors to a personal computer (patent no. 2612431), as well as a method of sealing the joints of facings, including an anti-filtration bundle in the form of a hollow cylinder filled with bentonite clay (patent no. 2598635). Conclusions: repair of damage to concrete water-supply linings is the most common, since the water permeability of the concrete structure decreases at the same time as the bearing capacity changes.

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