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PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints 1

PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints 2

PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints 3

PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints 4

PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints

Ensuring Long - lasting Waterproofing with Excellent Tensile Strength and Elongation at Break

1. Core Features

Superior Material Performance

Adopts high-quality flexible PVC composite without reclaimed materials, achieving a tensile strength of ≥12MPa and elongation at break of ≥300%—fully complying with GB/T 18173.2-2014 standards . It retains excellent elasticity across -35℃ to 65℃, withstanding -30℃ low-temperature bending without cracking and high-temperature exposure without brittleness . The water absorption rate is ≤0.5%, and it resists erosion from weak acids (pH 3-10), alkalis, and industrial sewage, maintaining stability in corrosive environments like wastewater treatment plants . Its specific gravity ranges from 1.35 to 1.42 g/cm³, ensuring consistent structural density .

Specialized Dumbbell-Type (DB) Wide-Width Structure

The 255mm width optimizes coverage for large joints in tunnels, dams, and underground utility tunnels, eliminating waterproof blind spots . The DB (dumbbell) cross-section features a central bulbous elastic core and two elongated bonding arms (6-8mm thickness): the bulb absorbs horizontal/vertical displacement up to 18mm, while the arms—equipped with anti-skid convex ribs—increase bonding force with concrete by 40% compared to smooth surfaces, preventing displacement during pouring . Shore A hardness measures 65-75, balancing rigidity for easy installation and flexibility for deformation .

Rigorous Quality Compliance

After 72 hours of hot air aging at 70℃, tensile strength retention exceeds 83% (≥10MPa) and elongation at break retention is ≥240%, ensuring long-term durability . It meets the V-0 flammability rating (UL94 standard) and passes microbial erosion tests, avoiding mold growth in damp environments. All batches undergo third-party testing for core indicators like tear strength (≥25kN/m) and 脆性 temperature (≤-30℃), with a 100% qualification rate .

2. Application Scenarios

Ideal for large-joint projects requiring wide coverage and high displacement resistance:

Municipal & transportation: Subway tunnel segment joints, underground utility tunnel main seams, bridge expansion joints, and rainwater regulation tank circumferential seams ;

Water conservancy engineering: Small reservoir dam joints, irrigation channel main line seams, culvert expansion joints, and sluice structural seams ;

Civil & industrial: Super high-rise basement floor/wall joints, large retaining wall expansion seams, and sewage treatment pool edge joints ;

Special scenarios: Chemical storage tank foundations and wastewater treatment plant structural joints (resistant to mild chemical corrosion) .

It performs stably under medium water pressure (≤0.6MPa) and frequent dry-wet alternations .

3. Installation & Advantages

Efficient Wide-Width Construction

Flexible texture allows bending for curved or right-angle joints; installation uses steel bar clamps or template pressing to keep the dumbbell core centered in the joint . On-site joints are sealed with hot welding (300W PVC gun) or specialized adhesive, reducing joint quantity by 35% compared to 180mm-wide models . Compatible with standard concrete pouring, it cuts construction time by 20-25% .

Cost-Effective Durability

Insoluble in water, oils, and common solvents, it maintains stable waterproof performance for over 35 years under normal use—minimizing long-term maintenance costs . The 255mm width reduces material waste by 28% for large joints, achieving 20-30% higher cost-effectiveness than narrower alternatives .

Reliable Supply & After-Sales

Packaged in 20m/25m moisture-proof rolls (customizable length), with a monthly supply capacity of 80,000 meters and 7-day delivery lead time . We provide free cross-section drawings and online installation guidance; quality issues within 2 years of purchase are eligible for free replacement (subject to product terms).

Note: For customized requirements (e.g., thickness adjustment: 4-10mm), please contact our customer service—we support mold customization for non-standard projects!

Material:

PVC

Color:

black

Length:

255mm

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Product description

Waterstop DB255 offers superior waterproofing and durability for construction projects, ensuring reliable protection against water leakage. With its high-quality materials and advanced design, this waterstop provides long-lasting performance, easy installation, and resistance to water, chemicals, and UV rays. Trust WS0843E to deliver tight seals and prevent leaks in various construction applications.

Product parameter

● The FDA Extraction Toxicity Tests with 21 CFR 175.300. British Standards BS 2782:320A test results

Stan dardcom pliance
BS 2782:320A	Hong Kong General Specification for Civil Engineering Works clause 16.80
U.S.Corps of Engineers CRD-C572-74	China GB/T 1040-1992
Properties
Form	Extruded thermoplastic sections
Colour	Black
Solid content	100%
Density	1409kg/m3
Hardness	78.0IRHD
Tensile strength	14 N/mm2
Elongation at bleak point	300%
Toxicity	non-toxic1

Product Advantages

PVC WATERSTOPPER DB255-1 - High - Efficiency Waterproof Solution for Concrete Joints 7

Durability

The Waterstop DB255 is designed with durable materials and advanced technology, ensuring long-lasting protection against water seepage.

Easy Installation

Its innovative design allows for easy installation and maintenance, saving time and effort for users.

Sealing Performance

With excellent sealing performance and reliability, the Waterstop DB255 is the ideal solution for waterproofing projects in various settings.

Advanced Technology

The Waterstop DB255 incorporates advanced technology to provide superior waterproofing capabilities, making it a top choice for water protection needs.

FAQ

What is the Waterstop DB255 used for?

The Waterstop DB255 is used to prevent water infiltration in concrete structures such as basements, tunnels, and reservoirs.

How is the Waterstop DB255installed?

The Waterstop DB255is typically installed by embedding it into the concrete joints during the construction phase.

What are the dimensions of the Waterstop DB255?

The Waterstop DB255 has a width of 8 inches and a height of 4 inches, with a standard length of 20 feet.

Can the Waterstop DB255be used in both horizontal and vertical applications?

Yes, the Waterstop DB255 can be used in both horizontal and vertical concrete joints to effectively stop water infiltration.

Is the Waterstop DB255compatible with various types of concrete?

Yes, the Waterstop DB255is compatible with most common types of concrete, including regular concrete, shotcrete, and precast concrete.

How long does the Waterstop DB255last once installed?

The Waterstop DB255 is designed to have a long lifespan and can effectively prevent water infiltration for many years, even in harsh environmental conditions.

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