How does the PVC waterstop perform when it works?

  PVC waterstop is a waterstop structure product made of rubber material with the characteristics of high elastic deformation under force. Widely used in water conservancy, hydropower, dikes, culverts, sluices, underground subways, civil air defense fortifications, basements and parking lots of high-rise buildings to stop the water of deformation joints. The PVC waterstop is pre-buried in the deformation joint and integrated with the concrete when the concrete is poured, which can effectively avoid water seepage and leakage at the deformation joint of the structure, and has the effect of shock absorption and buffering, and then guarantees the engineering structure. Waterproof requirements.

The PVC waterstop is made of imported special rubber, inorganic water-absorbing materials, high-viscosity resin and other more than ten kinds of materials through banburying, mixing and extrusion. It is developed on the basis of foreign products. A successful cross-section is a large-scale water-stop strip with a square strip-shaped self-adhesive water-swelling. Relying on its own viscosity, it is directly posted on the interface between the concrete construction joint and the post-pouring joint, and after the second pouring of concrete (that is, the state of being wrapped by concrete). The PVC waterstop will gradually expand when it encounters water. On the one hand, it blocks the capillary pores that may exist, and on the other hand, it makes the contact of the concrete interface more tightly, and then a large water resistance pressure occurs, forming an impermeable plastic colloid. .

The product has high expansion ratio, strong movement compensation, placed in the construction joint, and has a strong self-healing function after pouring the joint, and can automatically block new small gaps caused by settlement. If the water leaks from the gap, the water stop strip can be used to stop the leakage from the beginning. The use of the water stop strip is low in cost, simple in construction process and good in corrosion resistance.

Construction method

The construction method of PVC plastic waterstop is the same as that of rubber waterstop. When burying, make it fit with the concrete interface smoothly, and the joint part should be bonded tightly. During the burying process, the concrete should be fully vibrated with appropriate force to make it well combined with the concrete to obtain the best water-stop effect. .

Construction Notes:

During the construction process, since there are many sharp stones and steel bars in the concrete, users should pay attention to avoid mechanical damage to the plastic water stop during operation.

When positioning the plastic waterstop, make it fit smoothly with the concrete interface, and the waterstop should not be turned over, twisted, etc., otherwise it should be adjusted in time. When pouring and fixing the water stop, the water stop should be prevented from being offset, which will affect the water stop effect. Waterstop joints can use bonding, thermal welding and other methods to ensure that the joints are firm. In the process of pouring concrete, attention should be paid to sufficient vibration to achieve the full combination of waterstop and concrete.