High Quality Hydrophilic Bentonite Bar Water Swelling Waterstop Strip for Construction Concrete Joints

Product Description

Product Description

    is a water-swellable waterproof sealing material installed in concrete construction joints and deformation joints. It maintains original size when dry and rapidly expands 2-3 times upon water contact, automatically filling gaps to form a dense waterproof barrier that prevents water infiltration. Ideal for underground projects and tunnels with long-term water exposure.

Material
    Made of modified natural rubber or polyurethane base with superabsorbent polymer (SAP) and additives. SAP absorption ratio ≥200% with no exudates after expansion. Non-toxic and eco-friendly, compliant with building material hygiene standards.

Functions

*Active Water Stopping: Automatically expands upon water contact to fill gaps

*Sealing: Post-expansion contact pressure ≥0.2MPa for effective water blocking

*Deformation Adaptation: Follows structural micro-movement while maintaining seal

*Self-healing: Minor damage recovers functionality after water contact

*Easy Installation: Pre-formed strips for quick installation

Product Features
 * High Expansion Ratio: Volume expansion 200%-300%
 * Adjustable Swelling Rate: Fast or slow swelling options per construction needs
 * Strong Water Pressure Resistance: Withstands 0.6MPa water pressure without leakage
 * Good Durability: Anti-aging with stable long-term performance
 * Eco-friendly: Compliant with drinking water contact standards

Product Advantages

1.Reliable Waterproofing: Expansion sealing mechanism provides dual waterproof protection with lasting effectiveness.

2.Excellent Cost-Effectiveness: Simple construction process saves labor and material costs with high cost performance.

3.Good Durability: Resistant to aging and corrosion with multiple expansion capabilities and low performance degradation.

4.Wide Applicability: Suitable for various engineering types and complex concrete joint configurations.

Specification

Polymer Waterstop Strip Parameters
Physical properties		PZ-150	PZ-250	PZ-400	PZ-600
Hardness (shore A)		42±7	42±7	45±7	48±7
Tensile strength		3.5 Mpa (min)	3.5 Mpa (min)	3 Mpa (min)	3 Mpa (min)
Elongation		450% (min)	450% (min)	350% (min)	350% (min)
Expansion rate		150%	250%	400%	600%
Repeated water immersion test	Tensile strength	3 Mpa (min)	3 Mpa (min)	2 Mpa (min)	2 Mpa (min)
	Elongation	350% (min)	350% (min)	250% (min)	250% (min)
	Expansion rate	150%	250%	300%	500%
Low temperature bending (-20°C*2h)		No crack	No crack	No crack	No crack

Detailed picture

Packaging & Shipping

Company Profile

    Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.

    We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to esta  blishing long-term cooperative relationships with customers from both domestic and international markets.

FAQ

1.What is the expansion rate of the water stop?

The expansion rate ranges from 150% to 600% depending on the specific model selected.

2.Can the product be customized?

Yes, we offer full customization including size, color, shape (P-type, round), and expansion ratio.

3.What are the available sizes?

Standard sizes include 10x20mm, 15x20mm, 20x25mm, 20x30mm, and 30x40mm.

4.How does the water stop work?

It remains dry and stable until water contact, then rapidly expands 2-3 times to fill gaps and form a waterproof barrier.

5.What are the lead times for delivery?

Both peak season and off-season lead times are within 7 workdays.

6.What certifications does the product have?

The product is CE certified and authenticated by the Ministry of Communications.

7.What payment methods are accepted?

We accept T/T, L/C, Credit Card, PayPal, Western Union, Cash, and Escrow.