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Views: 0 Author: Site Editor Publish Time: 2026-03-05 Origin: Site
Waterstop is a waterproofing material used in joint areas of concrete structures, primarily installed in expansion joints, settlement joints, and construction joints to prevent water leakage through the joints. Based on different materials, waterstops can be classified into PVC waterstops, rubber waterstops, and steel-edged rubber waterstops. Waterstops of different materials have different performance characteristics and are suitable for various engineering environments and requirements.
Product Description
PVC waterstop is a plastic waterproofing material manufactured using polyvinyl chloride resin (PVC) as the main raw material, combined with additives such as plasticizers and stabilizers through processes including mixing, granulation, and extrusion. The product is sheet-shaped with a smooth surface and uniform texture.
The product has a certain degree of flexibility and can accommodate expansion, contraction, and settlement movements of concrete structures. It offers resistance to acids, alkalis, salts and other chemical media, maintaining stable performance under normal engineering conditions. Common cross-section types include central bulb type, flat type, embedded type, externally attached type, and others, with different cross-section types suitable for different joint applications.
The width, thickness, and length of the product can be manufactured according to project drawing requirements. Typical width ranges from 150-300mm, thickness ranges from 5-20mm, with a standard length of 25 meters per roll. Available colors include black, blue, and others.
PVC waterstop is primarily used in concrete joints of building, tunnel, municipal, and transportation engineering projects, providing waterproofing and anti-seepage functions at expansion joints, settlement joints, construction joints, and post-cast strips.
Product Description
Rubber waterstop is an elastic waterproofing material manufactured using natural rubber or synthetic rubber as the main raw material, combined with reinforcing agents, anti-aging agents, vulcanizing agents and other additives through processes including mixing, extrusion, and vulcanization. The product has elasticity, deforming under stress and gradually recovering after unloading.
Through formula adjustments, the product can achieve different performance characteristics such as aging resistance, acid/alkali resistance, and high/low temperature resistance. Common rubber types include natural rubber, neoprene, EPDM, etc., with different rubber types suitable for different engineering environments. Cross-section types include central bulb type, flat type, embedded type, type with grouting tube, and others.
The width, thickness, and length of the product can be manufactured according to project requirements. Typical width ranges from 200-400mm, thickness ranges from 6-15mm, with a standard length of 25 meters per roll.
Rubber waterstop is suitable for concrete joints in tunnels, subways, buildings, and other projects, providing waterproofing functions at expansion joints, settlement joints, and construction joints.
Product Description
Steel-edged rubber waterstop is a composite waterproofing material, using rubber as the main body, with treated steel strips embedded in the wings or center, compounded through vulcanization process. The product combines the elasticity of rubber with the rigidity of steel strips, which can increase the anchoring strength between the waterstop and concrete.
The rubber part has elasticity and can accommodate deformations of concrete structures; the steel strip part increases interlocking with concrete and extends the water seepage path. Cross-section types include central steel-edged type, double-side steel-edged type, groutable type, and others.
The width, thickness, and steel strip dimensions can be manufactured according to project requirements. Typical width ranges from 200-500mm, thickness ranges from 6-15mm, steel strip thickness ranges from 0.6-1.5mm, with a standard length of 10-20 meters per piece.
Steel-edged rubber waterstop is suitable for projects with higher waterproofing requirements, such as tunnels, subways, underground utility tunnels, dams, and is used under high water pressure and large deformation conditions.
Comparison Item | PVC Waterstop | Rubber Waterstop | Steel-edged Rubber Waterstop |
| Main Material | Polyvinyl chloride resin | Natural/Synthetic rubber | Rubber + Steel strip |
| Flexibility | Soft texture | Elastic | Rubber part has elasticity |
| Corrosion Resistance | Resistant to acids/alkalis | Varies by formula | Varies by formula |
| Anchoring Method | Concrete encapsulation | Concrete encapsulation | Steel strip enhanced anchoring |
| Common Cross-section Types | Central bulb type, flat type, embedded type | Central bulb type, flat type, embedded type, type with grouting tube | Central steel-edged type, double-side steel-edged type, groutable type |
When selecting waterstop types, the following factors may be considered:
Engineering Environment: Consider temperature, chemical media exposure
Water Pressure Requirements: Steel-edged rubber waterstops may be considered for high water pressure projects
Deformation Requirements: Rubber waterstops may be considered for projects with large deformations
Economic Factors: PVC waterstops offer good economy when performance requirements are met
Installation Conditions: Consider on-site construction conditions and joint treatment methods
Specific selection can be confirmed based on engineering design requirements and product performance parameters.
Waterstops should avoid contact with organic solvents
Prevent surface scratching by sharp objects during installation
Store in cool, dry place, avoid direct sunlight
Stack flat to avoid deformation from heavy pressure
Use flat vehicles for transportation, avoid mixing with sharp objects
