FIELD: waterworks and hydraulic building, particularly to seal and repair joints in concrete and reinforced concrete linings of irrigation channels and water-supply systems.
SUBSTANCE: control joint adapted to connect concrete or reinforced concrete panels of channel lining, includes polymeric or bitumen-polymer sealing mastics, porous packing of porous sealing material and releasing layer. Porous packing is covered with mastic water-proof layer of 1.5-2 mm thickness applied to porous packing perimeter.
EFFECT: increased joint air-tightness, increased joint life, reduced water filtration caused by water filtration through joints and, as a result, increased irrigation efficiency and improved ecology.
2 dwg
