EVA Waterstop - Highly Resistant to Weather and Aging

EVA (ethylene vinyl acetate) waterstop is manufactured from polyvinyl chloride, EVA resin and a variety of additives by special production processes. It is used for water leakage and permeation prevention in building construction joints by taking advantage of elastic deformation property of elastomer material. EVA waterstop is highly resistant to corrosion and it has very long life span. It can be used for various above or under ground buildings and it is especially suitable for water storage structures, such as water reservoirs, waste water treatment plants, dams, subways, tunnels, retaining walls, swimming pools, bridges and culverts.

Many rolls of EVA waterstops are on the ground.
EVA waterstops can be used for waste water treatment plants because of excellent corrosion resistance.
Two pieces of EVA waterstops are on the table.
EVA waterstops can be used for water reservoirs, waste water treatment plants, dams, bridges and tunnels.

EVA waterstops are manufactured in many shapes, such as ribbed with center bulb, split ribbed with center bulb, flat ribbed, split ribbed, dumbbell with center bulb, split dumbbell with center bulb, dumbbell, split dumbbell, base seal and tear web. The different shapes make EVA waterstops widely used in different kinds of concrete structures.

The cross section of ribbed with center bulb EVA waterstop.
EVAWS-01: Ribbed with center bulb EVA waterstop cross section.
The cross section of split ribbed with center bulb EVA waterstop.
EVAWS-02: Split ribbed with center bulb EVA waterstop cross section.
The cross section of flat ribbed EVA waterstop.
EVAWS-03: Flat ribbed EVA waterstop cross section.
The cross section of dumbbell with center bulb EVA waterstop.
EVAWS-04: Dumbbell with center bulb EVA waterstop cross section.
The cross section of split dumbbell EVA waterstop.
EVAWS-05: Split dumbbell EVA waterstop cross section.
The cross section of dumbbell EVA waterstop.
EVAWS-06: Dumbbell EVA waterstop cross section.
The cross section of base seal EVA waterstop.
EVAWS-07: Base seal EVA waterstop cross section.
The cross section of tear web EVA waterstop.
EVAWS-08: Tear web EVA waterstop cross section.

Features of EVA waterstop:

  • Resistant to abrasion.
  • Resistant to corrosion and chemicals.
  • Excellent elasticity.
  • Excellent waterproof performance.
  • Resistant to weather and excellent durability.
The specification of EVA waterstop
Item Parameter
Tensile strength at break (MPa) ≥ 16
Elongation at break (%) ≥ 550
Tear strength (kN/m) ≥ 60
Watertightness (30 min without leakage) (MPa) 0.3
Cold bending (°C) ≤ 35
Stretching and shrinkage amount of heating (mm) Stretching < 2
Shrinkage < 6
Hot air aging 70 °C × 168 h Tensile strength retention at break (%) ≥ 80
Elongation retention at break (%) ≥ 70
100 % elongation appearance Without crack
Alkali resistance 110% Ca(OH)2 normal temperature 168 h Tensile strength retention at break (%) ≥ 80
Elongation retention at break (%) ≥ 90

Application of EVA waterstops:

  • They are used for basements and retaining walls.
  • They are used for subways, tunnels and culverts.
  • They are used for bridges, dams, canals, water reservoirs and aqueducts.
  • They are used for storage tanks and swimming pools.
  • They are also used for water and waste water treatment plants.

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Zaoqiang Dacheng Rubber Co., Ltd.
E-mail: grady@zqdcrubber.com

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