The waterstop is partially or completely buried in the concrete during the concrete pouring process. There are many sharp stones and sharp steel bar heads in the concrete. Since the tear strength of plastic and rubber is lower than the tensile strength, the waterstop is Once punctured or torn, the crack will expand without much external force. Therefore, during the positioning of the waterstop and the pouring of concrete, attention should be paid to the positioning method and pouring pressure to prevent the waterstop from being punctured. To affect the water-stop effect, the specific precautions are as follows
1. The water-stop should not be exposed to the sun for a long time in the open air, prevent rain, and do not come into contact with highly polluting chemicals.
2. During transportation and construction, prevent machinery and steel bars from damaging the waterstop.
3. During the construction process, the waterstop must be reliably fixed to avoid displacement when pouring concrete and ensure the correct position of the waterstop in the concrete.
4. Methods for fixing the waterstop include using additional steel bars, special clamps, lead wires and templates, etc. (picture). If perforation is required, it can only be installed in the edge installation area of the waterstop. damage other parts.
5. When ordering, users should calculate the length of the product based on the engineering structure and design drawings. Special-shaped structures must be illustrated with drawings. Try to connect the waterstops as a whole in the factory. If on-site connection is required, electric heating can be used. Method of plate vulcanization bonding or cold bonding (rubber waterstop) or welding (plastic waterstop).
Scope of use of waterstops
Waterstops are widely used in various types of concrete structures. Such as retaining dams, reservoirs, subways, culverts, tunnels and other underground projects. In these projects, due to the inability to pour continuously, the deformation of the foundation, or the thermal expansion and contraction of concrete components due to temperature changes, etc., deformation joints and construction joints are often left during casting. The leakage prevention problem of these joints is The solution is to cast rubber waterstops on the parts of the deformation joints, which can not only prevent groundwater (or external water) from leaking into the building structure, but also prevent water in the building from leaking to the outside world.
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