HYEVA / HDPE / ECB waterproofing sheet, 1.0–3.0 mm, for tunnels and underground works. General basis GB/T 18173.1-2012; railway tunnels to TB/T 3360.1-2023.
Manufacturer: Shandong Hengyang New Materials Co., Ltd. | Standards as cited belowOverview
- Standards
- GB/T 18173.1-2012 (general) · TB/T 3360.1-2023 (railway)
- Materials
- EVA / HDPE / ECB / PVC
- Thickness
- 1.0–3.0 mm
- Width
- 2–8 m
About Tunnel Waterproof Board
Tunnel waterproof board is installed between the initial support and the secondary lining to stop groundwater entering the structure. It must accommodate deformation and maintain watertight welds under long-term water pressure.
EVA is the mainstream choice for its flexibility and weldability; HDPE is used where chemical resistance matters; ECB balances flexibility and weathering. A nonwoven buffer layer is normally placed beneath the board.
Key Specifications
- Standards
- GB/T 18173.1-2012 (general) · TB/T 3360.1-2023 (railway)
- Materials
- EVA / HDPE / ECB / PVC
- Thickness
- 1.0–3.0 mm
- Width
- 2–8 m
Typical Applications
Highway and railway tunnels
Metro stations and underground car parks
Culverts and utility tunnels
Pump houses and underground reservoirs
Frequently Asked Questions
EVA or HDPE board?
EVA for flexibility and ease of welding in typical tunnels; HDPE where the groundwater is chemically aggressive; follow the design specification.
Enquiry | Tunnel Waterproof Board
Send your specification, quantity, required standard and destination to receive selection advice and a quotation. Samples and mill test reports available.