Product
Rigid/Stiff Expansion Joint Foam
Specifications:
Density: 110 kg/cbms
Hardness: from 50 shore C to 60 shore C
Width: 5 mm to 2000 mm
Thickness: 1 mm to 10 mm (single layer), 10 mm to 100 mm (multi layer)
Length: 300 mm to 2000 mm
Color: black, white, grey
Back tapping: available
Cutting Size or sharp: available
Fire Retardant: optional
Adhesive backing: optional
Product Details
Product Description
Rigid/Stiff Expansion Joint Foam is a high-performance closed-cell foam filler designed specifically for concrete structures, roads, bridges, building expansion joints, and flooring projects. Featuring exceptional compressive resilience, weather resistance, and extremely low water absorption, it effectively absorbs displacement stresses caused by thermal expansion and contraction, preventing structural cracking and significantly extending the service life of the structure.
Technical Specifications
| Property | Test Standard | Typical Value |
| Material | - | Cross-linked Polyethylene (PE) Foam / Closed-cell |
| Density | ASTM D3575 | 45-65kg/m3 |
| Compressive Strength | ASTM D3575 | 0.15 - 0.25 MPa (at 50%compression) |
| Water Absorption | ASTM C272 | < 0.5% by volume |
| Service Temperature | - | -40°Cto+80°C |
| Elongation at Break | ASTM D3575 | > 150% |
| Chemical Resistance | - | Excellent (Resistant to acids, alkalis, oils, and solvents) |
Product Advantages
Superior Compressive Resilience: Quickly recovers its original shape after heavy loads or frequent deformation, providing long-lasting structural support.
100% Closed-Cell Waterproofing: Non-absorbent and impermeable, effectively blocking moisture infiltration and preventing internal reinforcement corrosion.
Outstanding Weather Resistance: Highly resistant to UV radiation and extreme temperatures, ensuring stable long-term performance in harsh outdoor environments.
Easy and Fast Installation: Lightweight and easy to cut; can be directly bonded or press-fitted into joints, significantly improving installation efficiency.
Eco-Friendly & Non-Toxic: Odorless and free of hazardous emissions, complying with green building standards.
FAQ
Q1: What are the main application scenarios for this product?
A: Widely used in expansion joints, settlement joints, and isolation joints for highways, bridges, airport runways, water conservancy projects, concrete walls, industrial flooring, and building roofs.
Q2: How is it cut and fixed during installation?
A: The material is lightweight and can be easily cut to size using a standard utility knife. It can be secured using construction adhesive or friction-fitted directly into the pre-formed joint.
Q3: Will this foam board absorb water and get damp?
A: No. Featuring an independent closed-cell structure with extremely low water absorption, it can be used long-term in damp environments or underground without rotting or molding.
Q4: Do you support custom sizes or thicknesses?
A: Yes, customization is available. We can provide tailored thicknesses, widths, lengths, and sheet/roll formats to meet your specific project requirements.
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