METOD OF MANUFACTURING OF WATER-PROOF SCREEN IN SOIL MATERIALS OF ELEMENTS OF HYDRAULIC ENGINEERING CONSTRUCTION Russian patent published in 2008 - IPC E02B3/16 

FIELD: building.

SUBSTANCE: invention concerns area of hydraulic engineering building, namely, to restoration of watertightness of soil hydraulic engineering constructions. Method consists in colmatage of a soil material the waterproofing polymeric structure consisting of a water solution of polyvinyl spirit and boric acid, by interval forcings under pressure, smaller pressure of a hydrorupture of the soil material. Forcing of a waterproofing polymeric solution is made simultaneously with an air supply and add-on of a frothing agent and a plasticizer for polyvinyl spirit at following parities of components, wt %: polyvinyl spirit - 3.0-12.0, pine forest connections: a bore or boric acid - 0.2-1.0, plasticizer - 0.1-9.0, frothing agent - 0.1-2.0, water - the rest. As a plasticizer, use glycerine, or ethylene alcohol, or trimethylene alcohol, or urea, etc. As a frothing agent, use frothing agent PO-1, or PO-6, or "Volgonat", etc. Simultaneously or before injection a waterproofing polymeric solution add phosphoric acid, or iron or chrome connections, or chloric iron, or chromates and bichromates. The invention provides depreciation of manufacturing of the water-proof screen and possibility of its use in a wide range of temperatures.

EFFECT: cost decrease manufacturing of water-proof screen and possibility of its use in a wide range of temperatures.

4 cl