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Description:
Since this product utilizes hydrophilic rubber along its waterproofing line, expansion occurs when coming in contact with water, adding to the tightness between the water-stop belt and the civil structure, thus, improving its waterproofing and water stopping capability, solving the traditional problem of water leak around the water stopping line, with numerous setbacks of traditional water-stop belts being avoided.
This product include two specifications, namely HPA-A and HPA-B and their characteristics are described below:
The waterproof wire is made of hydrophilic rubber, which expands when getting in touch with water, thus, allowing it to come into closer contact with the concrete, creating a better water-stop result.
Unequal-thickness structure is adopted for the cross section, which is divided into three areas, namely the high-strength area, the waterproof area and the installation area, allowing for uniform and reasonable stress for all portions.
Outer wall of the expansion hole is flat, allowing for a larger contact face for mould plate to clamp on firmly; installation hole is added in the installation area, allowing for easy fastening with the neighboring reinforcement bars without any displacement. In this manner, it allows for easy installation and reliable positioning.
Perfect jointing between the galvanized steel plate and the concrete produces a better waterproofing performance (one of the features of Type HPA-B).
Physical properties:
| Description |
Index |
B |
S |
J |
Swellable strip |
1. Hardness ( Shore ) |
60±5 |
60±5 |
60±5 |
42±7 |
2.Tensile strength ,Mpa ≥ |
15 |
12 |
10 |
3.5 |
3.Elongation at break , % ≥ |
380 |
380 |
300 |
450 |
4.Compression set % |
70℃×24h ≤ |
35 |
35 |
35 |
--------- |
23℃×168h ≤ |
20 |
20 |
20 |
5. Tear strength ,KN/m ≥ |
30 |
25 |
25 |
---------- |
6.Brittleness temperature , ℃ ≤ |
-45 |
-40 |
-40 |
----------- |
7.Hot air aging |
70℃×168h |
Hardness (shore) |
+8 |
------ |
— |
———— |
Tensile strength ,Mpa ≥ |
12 |
------- |
— |
Elongation at break, % ≥ |
300 |
—— |
— |
100℃×168h |
Hardness (shore) |
—— |
—— |
+8 |
Tensile strength ,Mpa ≥ |
—— |
—— |
9 |
Elongation at break, % ≥ |
—— |
—— |
250 |
8. Resitance to ozone ageing50pphm:20%,48h |
Grade2 |
Grade2 |
Grade0 |
———— |
9. Adhesion of rubber to metal |
With contact section in elastomer |
———— |
10. Expansion rate in volume, % ≥ |
—————— |
150 |
11.Repeared water immersion test |
Hardness (shore) |
___________ |
3 |
Tensile strength,Mpa ≥ |
350 |
Elongation at break, % ≥ |
150 |
12.Low temperature bending (-20℃×2h) |
———— |
No crack |
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Hydrophilic Rubber Waterstop Belt
