METHOD FOR CONNECTION OF FILM ANTI-FILTRATION SCREENS OF HYDROTECHNICAL STRUCTURES Russian patent published in 2009 - IPC E02B3/16 

FIELD: construction.

SUBSTANCE: invention is related to hydrotechnical and land-improvement construction and is intended for creation and repair of anti-filtration protection of hydrotechnical structures, in particular, soil-reclamation channels, man-made water reservoirs of different purpose and water supply systems. Method for connection of film anti-filtration screens includes preparation of adhesive bitumen-polymer mastic, installation of film screen cloths, wiping of film edges from dust and dirt, application of adhesive bitumen-polymer mastic onto edge of lower cloth of film, rolling of connected edges of film screen cloths. Adhesive mastic for connection of film anti-filtration screens includes bitumen, stillage bottoms of synthetic fatty acids of fraction C₂₁ and higher than brand B, cation-active adhesive bitumen additive "БП-3" and additionally contains crushed chrysotile asbestos with particle size of at least 0.2 mm and polishing dust - waste of asbestos technical items production.

EFFECT: increased efficiency of method for connection of film anti-filtration screens by increasing strength and water permeability of glued seam.

5 cl, 3 tbl, 1 ex