The rubber waterstop ring is a ring shaped waterproof material refined from macromolecular inorganic water absorbing expansion material and rubber. Also known as water swelling rubber waterstop ring, split tension Bolt Expansion sealing ring putty Type expansion ring, product type expansion ring, water expansion seal ring, etc.
Application effect of rubber waterstop ring
In traditional concrete wall In formwork erection, split bolts or batten tie rods are the main connectors connecting the internal and external two groups of vertical formworks. Because thousands of split bolts used to fix the steel formwork penetrate the wall, the waterproof function of waterproof concrete itself is lost. In order to solve this problem, a 2-3mm thick 80mm × 80mm steel water stop plate is welded in the middle of the split bolt in the current construction. The defect of this method is that it is difficult to check and guarantee the quality of the weld, and it is passive waterproof. Once there are cracks, slag inclusion, burn through, needle shaped pores and other defects in the weld, it will produce water seepage channels in the future and it is difficult to cure. The rubber waterstop is made of PN-300 water swelling rubber, and its performance meets the various indicators in Part III Water swelling rubber of GB/T18173 Polymer Waterproof Materials. It can be round or rectangular sheet. The general specification is outer diameter D=40mm and thickness H=10mm. When in use, the waterstop can be tightly sheathed in the middle of the split bolt or the batten type tie rod, and finally embedded in the cast-in-place concrete to achieve a good waterproof effect.
Installation diagram of waterstop ring Physical performance index of putty type waterstop ring
| S/N | project | PN-300 index |
|---|
| one |
Volume expansion% |
three hundred |
| two |
High temperature fluidity (80 ° Cx5h) |
No flowing |
| three |
Low temperature test (- 20 ° Cx2h) |
No embrittlement |
Physical performance index of product type waterstop ring
| S/N | project | index |
|---|
| PZ-150 |
PZ-250 |
PZ-400 |
PZ-600 |
| one |
Hardness (Shore A) degree ≥ |
42±7 |
45±7 |
48±7 |
| two |
Tensile strength/MPa ≥ |
3.5Mpa |
3Mpa |
| three |
Elongation at break ≥ |
450% |
350% |
| four |
Volume expansion rate ≥ |
150% |
250% |
400% |
600% |
| five |
Repeated immersion test |
Tensile strength ≥ |
3Mpa |
2Mpa |
| Elongation at break ≥ |
350% |
250% |
| Volume expansion rate ≥ |
150% |
250% |
300% |
500% |
| six |
Low temperature bending (- 20 ° C × 2h) |
No crack |
Advantages of product type waterstop ring
- Simple structure, convenient construction, pure, corrosion resistant, can speed up the construction progress, low cost, reliable quality.
- The working principle is simple, with strong visibility, easy to understand and accept by the design, supervision, owner and construction parties.
- The expansion rate can reach more than 300%, and the durability is reliable. After several projects, no leakage occurs.
matters needing attention
The product shall not be soaked in water or exposed to rain for a long time before transportation, storage and concrete pouring.
