DEESA FLEX PVC Water Stop are flexible Plastic strips which provide a physical barrier to Water at concrete joints, mostly in basements, Water retaining structures like Water tanks, Swimming pools, structural foundations & other below ground level constructions. Waterstop are also termed as Water Bars, seals construction joints. A typical PVC water stop have two identical half on both sides of a central bulb. These additional extensions are provided with the aim of increasing path length for water entering behind the edge of water stop.
Compounding of PVC Water Stop:
PVC Water stop are manufactured at Dessawala Rubber Industries from Anti-Ageing customized plastic compound with PVC as a base polymer and exhibiting required properties like High Elasticity & Tensile Strength, Immune to Corrosion, Excellent weather resistant, Unaffected by acids, alkalis, metals salts and other chemicals, Lower water absorption, Withstand high Hydrostatic pressure, Can bear shocks of heavy turbines, Earthquakes, Floods.
Application in Construction Industry:
PVC Water stop act as a sealant at RCC Masonry concrete joints & prevent any seepage of water in or out through joints.
PVC Water stop withstand expansion or contraction movement at joints and take care of any deflection or displacement arising due to change in temperature, differential settlement of foundation, Geo disturbances causing Seismic forces like earth quack, thus eliminating danger of cracks.
Selection of appropriate Waterstop:
1.Ribbed Type– multipurpose waterstop design, used where the differential settlement of poured concrete is expected and a firm grip in concrete is desired.
2.Dumbbell Type– Greater variation in temperature causes expansion or contraction of joints, Dumbbell type waterstop is suggested for these sites.
3.Kicker (Surface) Type: these are externally placed and are used where embedded types cannot be used due to the interference of steel reinforcement.
Water Stop are tied to steel framework through eyelets by means of small wires (same being depicted in the adjacent figure), certain metal clamps meant to grip the water stop seal and keep it in the proper position.
Firstly one half of the water stop is embedded in the concrete leaving the second half extended. The second half is also embedded leaving the center bulb free for expansion and contraction movements.
Area of Application:
Public Utilities: Bridges, Road Embankments, Tunnels, Water Tanks, Swimming Pools, Water Filtration plants, Sewage Plants, Clarifiers, Dams, Canals, Aqueducts, Reservoirs, Irrigation Projects Cooling Towers.