Works on full replacement of concrete elements of engineering constructions of different function (channels, sluices, pipelines, dams, piers, quays, etc.) are rather labor-consuming and also expensive. However in many cases when concrete constructions require replacement, the considerable part of concrete constructions can be restored by cheaper methods. For this purpose it is necessary to remove a dilapidated surface layer of concrete (as a rule, in some centimeters in the thickness) to carry out a "sterilization" of a surface and to restore a concrete layer and/or to cover a concrete surface with a polymeric cover