Water stop strips is a hydrophilic swelling bentonite waterstop. The based material is bentonite clay with polymer rubber. The product swell when contact with water create more than 300% expansion. The release benonite fill void between the two portion of concrete joint.
No | Test items | requirements | results | standard | |
1 | Hardness(shore A, degree) | ≥ 45±7 | 50 | GB/T18173.3-20146.3.7 | |
2 | Tensile strength (mpa) | ≥ 3.5 | 3.7 | GB/T18173.3-20146.3.7 | |
3 | Elongation at break(%) | ≥450 | 470 | GB/T18173.3-20146.3.7 | |
4 | Volume expansion(%) | ≥400 | 420 | GB/T18173.3-20146.3.7 | |
| Repeated Immersion test | Tensile strength (mpa) | ≥ 3 | 3.2 | GB/T18173.3-20146.3.7 |
5 | Elongation at break(%) | ≥ 650 | 630 | GB/T18173.3-20146.3.7 | |
| Volume expansion(%) | ≥ 300 | 340 | GB/T18173.3-20146.3.7 | |
6 | Low temperature bending | No cracks | pass | GB/T18173.3-20146.3.7 | |
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