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Rubber waterstop
Rubber waterstop utilize the high elasticity and compressive deformation characteristics of rubber to generate elastic deformation under various loads, thereby effectively tightening and sealing, preventing water leakage, seepage, and shock absorption and buffering of buildings. In the architectural design of general large projects, construction joints, settlement joints and deformation joints need to be reserved due to the inability of continuous pouring, or the deformation of the foundation, or the thermal expansion of concrete components caused by temperature changes, and water seals must be installed at these joints to prevent water leakage.
Classification of waterstops: medium buried rubber waterstops, back attached rubber waterstops (external attached rubber waterstops), steel edge rubber waterstops, water swelling rubber waterstops, steel plate putty waterstops, etc.
The foundation engineering that integrates the concrete structure with the construction joints and deformation joints when pouring concrete in situ, such as underground facilities, tunnel culverts, subways, shipyards, water conveyance aqueducts, dams, water plants, sewage treatment plants, and liquid storage structures
Reference standard GB/T18173.2-2014
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Serial Number |
project |
index |
|||
|
B、S |
J |
||||
|
JS |
JX |
||||
|
1 |
Hardness (Shore A)/degree |
60±5 |
60±5 |
40-70 |
|
|
2 |
tensile strength/Mpa≥ |
10 |
16 |
16 |
|
|
3 |
Elongation at break/%≥ |
380 |
400 |
400 |
|
|
4 |
compression set % |
70℃×24h,25%≤ |
35 |
30 |
30 |
|
23℃×168h,25%≤ |
20 |
20 |
15 |
||
|
5 |
tear strength kN/m≥ |
30 |
30 |
20 |
|
|
6 |
brittleness temperature℃≤ |
-45 |
-40 |
-50 |
|
|
7 |
Hot air aging 70℃×168h |
Hardness change (Shore A)/degree≤ |
+8 |
+6 |
+10 |
|
tensile strength/Mpa≥ |
9 |
13 |
13 |
||
|
Elongation at break/%≥ |
300 |
320 |
300 |
||
|
8 |
Adhesive strength between rubber and cord fabric N/mm≥ |
- |
5 |
- |
|
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