Buried rubber waterstop can expand when getting in touch with water to prevent liquid leaking in or out and absorb shock. It is made from natural rubber or synthetic rubber, adding various additives and fillers, through the process of plasticizing, mixing, pressing, forming. Its biggest feature is positive and negative symmetry, left and right symmetry. Positive and negative all have stems or not, and the number of stems can be customized. It can be divided into CB type and CP type. The waterstop has the advantages of high elasticity, can withstand hydrostatic pressure, resistant to wear, aging, corrosion, rust, tear and so on. It mainly used in underground facilities and concrete structures, such as dams, reservoirs, subway, culverts, tunnels, sewage treatment plants.

Specification

Material: rubber.

Species: CB type, CP type; 651, 652, 653 and other type.

Length, width and thickness can be customized.

Buried Rubber Waterstop Properties

Number Item Index

B S J

1 Hardness (shore A) 60±5 60±5 60±5

2 Tensile Strength (MPa) ≥ 15 12 10

3 Elongation at Break % ≥ 380 380 380

4 Compression Set 70°C × 24 h % ≤ 35 35 35

23°C × 168 h % ≤ 20 20 20

5 Tearing Strength KN/m 30 25 25

6 Brittleness Temperature °C ≤ -45 -40 -40

7 Hot Air Aging 70°C × 168 h Hardness (shore A) ≤ +8 +8 -

Tensile Strength (MPa) ≥ 12 10 -

Elongation at Break % ≥ 300 300 -

100°C × 168 h Hardness (shore A) ≤ - - +8

Tensile Strength (MPa) ≥ - - 9

Elongation at Break % ≥ - - 250

8 Ozone aging 50 pphm: 20%, 48 h Grade 2 Grade 2 Grade 0

Note: If there are other requirements, inspection items can be appropriately added according to buyer and seller. If evaluating mold test in line with users, its anti-mold property should be equal to or above Grade 2.

Specification of 651:

Width × thickness (mm): 300 × 6, 300 × 8, 350 × 6, 350 × 8.

Specification of 652:

Width × thickness (mm): 280 × 6, 280 × 8, 300 × 6, 300 × 8, 350 × 6, 350 × 8.

Feature

High elasticity.

Capable to withstand hydrostatic pressure.

Adjust for subsidence and seismic movements.

Can arise compression deformation under various loads.

Adapt well to deformation and waterproof.

Wear, aging, corrosion, rust, tear resistance.

Setting holes ensure the waterstop fix with the nearest steel bar convenient and firmly.

Temperature range from -45°C to +60°C.

Application

Buried rubber waterstop can be applied to various types of concrete structures to prevent liquid leaking in or out, such as dams, reservoirs, subway, culverts, tunnels, sewage treatment plants, water conservation, subways, sluices, underground facilities, aqueducts, roof, irrigation canals, sea walls, etc.