METHOD FOR RECOVERY AND BUILDING-UP OF PROTECTIVE LAYER OF CONCRETE ON VERTICAL SURFACES OF REINFORCED-CONCRETE CONSTRUCTIONS Russian patent published in 2002 - IPC

FIELD: construction, in particular, methods for recovery and building-up of the protective layer at repair and reinforcement of reinforced-concrete constructions of buildings and other structures. SUBSTANCE: the method consists in application of a layer of concrete mix, application of the concrete mix is accomplished with surface compression with the aid of a vibrating concrete float by filling the cavity formed by the surface of the reinforced-concrete construction and the vibrating concrete float with it, simultaneously with surface compression is accomplished in the area of contact of the vibrating concrete plate with the surface of the reinforced-concrete construction, which is moved upwards at a speed of 1 to 30 mm/s in parallel with the vibrating concrete float, and an air-proof film is applied onto its surface before the beginning of setting of concrete, when a film of rolled material is applied, air is pressed out from under it, and it is removed in 12 to 96 hours. Prior to application onto the reinforced-concrete construction, the concrete mix is preliminarily warmed up to a temperature of 40 to 80 C. EFFECT: enhanced adhesive strength of applied protective layer of concrete, improved indices of water-proofness, frost resistance and corrosion resistance. 2 cl