Tinggalkan pesan
Jika Anda tertarik dengan produk kami dan ingin mengetahui lebih detail, silakan tinggalkan pesan di sini, kami akan membalas Anda sesegera mungkin.
High-Performance EVA Smooth Waterproof Board for Railway Tunnels
EVA waterproof board is a polymer waterproofing material manufactured through a flat extrusion process using ethylene-vinyl acetate (EVA) copolymer as the primary raw material. It is designed for waterproofing and seepage control in railway tunnels, subway tunnels, highway tunnels, and other underground structures.
EVA waterproof board offers good flexibility, elasticity, and low-temperature bending performance. These properties make it suitable for installation along different tunnel profiles, including crowns, shoulders, and sidewalls. Depending on the engineering design, it can be integrated with geotextiles, drainage pipes, and other waterproofing components to form a complete tunnel waterproofing system.
Warna :
Black, White, Blue, GreenKetebalan :
1.5-3mmLebar :
2-4mWaktu tunggu :
7-14 days after receipt of the depositePesanan (MOQ) :
2000㎡Pembayaran :
FOB (Can communicate and negotiate)Asal Produk :
ChinaPelabuhan Pengiriman :
Qingdao
EVA waterproof board is a polymer sheet manufactured primarily from ethylene-vinyl acetate copolymer. EVA is produced by copolymerizing ethylene and vinyl acetate.
Compared with rigid waterproofing materials, EVA waterproof board offers good flexibility, making it easier to position along curved tunnel surfaces. In underground engineering, it is installed as part of a designed waterproofing system, with its location, fixing method, and jointing procedure determined by the project specifications.
In common tunnel waterproofing arrangements, the board is installed between the primary support and the secondary concrete lining. It may be used together with geotextiles, drainage components, and other waterproofing details where required by the design. Geotextiles may provide filtration, separation, or protection, depending on the system design, while drainage components convey groundwater along designated routes.
| Item | Value |
| Breaking tensile strength (Mpa) | ≥18 |
| Breaking elongation (%) | ≥650 |
| Tear strength (KN/m) | ≥100 |
| VA content (%) | ≥5 |
| Puncture strength (N) | ≥300 |
| Bending at low temperature (-35℃) | No crack |
1. Good Flexibility for Curved Tunnel Surfaces
Tunnel structures include crowns, shoulders, sidewalls, and other curved sections. Waterproofing materials must accommodate these profiles without compromising the designed waterproofing arrangement. EVA waterproof board offers good flexibility, helping installers position the material along different tunnel contours. Proper tension control and fixing remain important to prevent excessive stretching, unsupported sections, and unwanted folds.
2. Waterproofing and Seepage Control
EVA waterproof board forms a continuous barrier designed to limit groundwater penetration into tunnel structures.
3. Low-Temperature Bending Performance
EVA materials offer elasticity and flexibility, and their low-temperature bending performance can be assessed against the applicable product standard.
4. Resistance to Selected Chemical Environments
In some underground projects, waterproofing materials may come into contact with groundwater or soil containing different chemical substances. EVA materials offer resistance to various chemical media, but their actual resistance to acids, alkalis, and corrosive substances depends on the formulation, concentration, temperature, and exposure duration.
5. Compatibility with Other Waterproofing Components
EVA waterproof board can be incorporated into a tunnel waterproofing system together with geotextiles, drainage pipes, and other components, where required by the design. The board primarily provides waterproofing and seepage control. Geotextiles may perform filtration, separation, or protection functions, while drainage components convey groundwater.
1. Waterproofing for Subway Tunnels
EVA waterproof boards provide reliable waterproofing and seepage resistance, preventing groundwater from entering subway tunnels and maintaining a dry internal environment. Their flexibility makes them easier to install along tunnel surfaces and accommodates changes in the substrate profile. Good low-temperature flexibility also supports installation under different construction conditions.
2. Waterproofing for Highway and Railway Tunnels
In tunnel waterproofing projects, EVA waterproof boards form a continuous waterproof barrier that reduces the impact of groundwater seepage on the tunnel structure and interior environment. Their flexibility allows them to follow tunnel contours during installation. In addition, their resistance to acids, alkalis, and chemical corrosion improves their suitability for challenging underground environments.
3. Waterproofing for Basements
Basements are exposed to moisture in the surrounding soil and potential groundwater seepage. EVA waterproof boards offer good waterproofing and seepage resistance, reducing the risk of water penetration.
4. Waterproofing for Roofs
EVA waterproof board provides good waterproofing performance and weather resistance, reducing rainwater penetration into buildings. Their chemical corrosion resistance maintains material performance under suitable service conditions.
5. Waterproofing for the Inner Surfaces of Arched Structures
EVA waterproof boards are particularly suitable for waterproofing the inner surfaces of tunnel arches. Their flexibility and low-temperature bending performance help them conform to curved surfaces, making installation easier and reducing difficulties caused by changes in surface geometry. Their waterproofing and seepage-resistance properties create a continuous barrier that reduces the risk of water penetration through the structure.
 |
 |
 |
 |
 |
 |
 |
 |
Q1: What's in it for you when you choose us?
Product Specifications: TB/T3360.1-2014.
Competitive Prices: Factory-Direct Prices, No Middlemen.
Real-Time Updates: we provide regular updates on production progress and shipment status, along with photos and videos of the production and loading process, so you can stay informed about your order at every stage.
After-Sales Service: provide the required documents, offer professional online engineering and technical support and so on.
Q2: What are the main applications of EVA waterproof board?
Typical applications include subway tunnels, tunnels, basements, roofs, especially suitable for waterproofing engineering on the inner surface of arches.
Q3: What is the service life of EVA waterproof board?
Generally speaking, it can be used for 20-30 yaers or even longer. But actual service life depends on the material formulation, manufacturing quality, installation workmanship, groundwater conditions, structural design, and maintenance conditions.
Tinggalkan pesan
Scan to Wechat/Whatsapp :
English
Français
Deutsch
Русский
Español
Português
عربي
Tiếng Việt
Indonesia
हिन्दी
IPv6 DUKUNGAN JARINGAN