Rubber dam has obvious fins on the dam body to form a rising angle when the dam is inflated. the fins can heighten overflow's water head and eliminate vacuum underneath the dam to reduce the vibration and abrasion. It is usually used to retain water, agricultural irrigation, generate electricity, control flood, beautify environment, etc
Specification
- Material structure: one cloth two rubber, two clothes three rubber, three clothes four rubber, etc.
- Color: blue, black, red, gray, purple, etc.
- Medium in dam: water.
- According to installation method:
- Single anchor.
- Double anchor (pillow-like dam and inclined dam).
- According to anchored method:
- Bolt anchored.
- Wedge anchored.
- Customization can be available.
Physical and mechanical properties of water inflatable rubber dam
| Item |
Unit |
Outer layer |
Middle layer, inner layer |
Cover rubber sheet |
|---|
| Tensile strength at break |
MPa |
14 |
12 |
6 |
| Elongation at break |
% |
400 |
400 |
250 |
| Permanent deformation at break |
% |
30 |
30 |
35 |
| Hardness (shore A) |
|
55-65 |
50-60 |
55-65 |
| Brittleness temperature |
°C |
-30 |
-30 |
-30 |
| Hot water aging (100 °C 96 h) |
Tensile strength at break |
MPa |
12 |
10 |
5 |
| Elongation at break |
% |
300 |
300 |
200 |
| Hot water aging (70 °C 96 h) |
Tensile strength at break |
MPa |
12 |
10 |
5 |
| Elongation at break |
% |
300 |
300 |
200 |
| Volume expansion ratio |
% |
15 |
15 |
15 |
| Ozone aging: 10000 pphm, temperature 40 °C, stretching 20%, no cracking |
min |
120 |
120 |
100 |
| Wear loss (akron) |
Cm3/1.61 km |
1.0 |
1.0 |
1.2 |
| Flexibility, no cracking |
Ten thousand times |
20 |
20 |
20 |
Specification of water inflatable rubber dam
| Code |
Height (m) |
Inner pressure / outer pressure |
Security coefficient (k) |
Bottom gaskets width (m) |
Dam bag perimeter (m) |
|---|
| WIRDS-1 |
1.0 |
1.6 |
> 8 |
1.8 |
3.70 |
|---|
| WIRDS-2 |
1.5 |
1.55 |
> 8 |
2.05 |
5.40 |
|---|
| WIRDS-3 |
2.0 |
1.52 |
> 8 |
3.40 |
7.10 |
|---|
| WIRDS-4 |
2.5 |
1.46 |
> 8 |
4.36 |
8.80 |
|---|
| WIRDS-5 |
3.0 |
1.4 |
> 8 |
5.45 |
10.70 |
|---|
| WIRDS-6 |
3.5 |
1.35 |
> 8 |
6.8 |
12.70 |
|---|
| WIRDS-7 |
4.0 |
1.32 |
> 8 |
7.96 |
14.65 |
|---|
| WIRDS-8 |
4.5 |
1.3 |
> 8 |
9.15 |
16.50 |
|---|
| WIRDS-9 |
5.0 |
1.25 |
> 8 |
11.1 |
19.08 |
|---|
| WIRDS-10 |
5.5 |
1.25 |
> 8 |
12.13 |
20.90 |
|---|
| WIRDS-11 |
6.0 |
1.25 |
> 8 |
13.27 |
22.80 |
|---|
