METHOD FOR REPAIR OF LONG-WORKING CHANNEL CONCRETE LINING Russian patent published in 2020 - IPC E02B3/16 E02B5/02 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering and irrigation and reclamation construction and can be used for repair of various damages (cracks, deformation seams, local and other destructions) of concrete lining of long-term working channels of irrigation and drainage systems. Method of repairing concrete lining of long-term working channels includes preparation of a defective area, cleaning of surface of concrete lining 1, priming using mechanized equipment 6, which includes vessel with component A (reagent) 7 and container with component B 8, compressor unit 9, flexible hoses 10 with two-channel sprayers 11, sputtering on damaged surface of concrete coating of thin layer of component A 7, laying of cloth of woven or nonwoven geotextile 12 and device of finish coating 13 using component B applied on top of geotextile 12 with continuous layer with thickness of 3 to 6 mm. Component A is presented in the form of a polymer-bitumen emulsion, and component B is in form of a surface fixer. Ratio of components is 1:8.

EFFECT: advantage of the declared invention is the possibility of repairing various damages of concrete lining of long-running irrigation and drainage systems irrespective of their dimensions, improving reliability, efficiency and extension of concrete cladding service life, elimination of filtration zones on anti-filtration facing and reducing their roughness.

1 cl, 3 dwg