EVA Geomembrane for Tunnel Composite Lining
EVA geomembrane is a highly specialized and advanced material that has revolutionized waterproofing and seepage control in various industries. It is a composite geomembrane, a layer of flexible, durable material used in geotechnical engineering, specifically designed to prevent the passage of water or other liquids. The core of EVA geomembrane is Ethylene Vinyl Acetate (EVA) plastic, a copolymer of ethylene and vinyl acetate that offers exceptional properties suitable for these applications.
EVA geomembrane's unique blend of properties makes it an ideal choice for demanding waterproofing projects. Its primary characteristic is its remarkable impermeability, ensuring that water and other fluids are effectively contained or excluded as required. This is crucial in water conservancy projects like reservoirs, dams, and canals, where the integrity of the water barrier is paramount. Additionally, EVA geomembrane's resistance to chemical attack ensures that it remains functional even in harsh environments with exposure to acids, alkalis, and other corrosive substances.
EVA geomembrane, or Ethylene Vinyl Acetate geomembrane, is a high-performance geomembrane used for waterproofing and anti-seepage applications. It is primarily made of Ethylene Vinyl Acetate (EVA) plastic, which is a copolymer of ethylene and vinyl acetate. Often, EVA geomembrane is combined with reinforcing materials such as non-woven fabrics to form a composite geomembrane, enhancing its overall strength and durability.
Specification：
Thickness:1.5-3.0mm
Width:2-4m
Length can be customzied according to customer's
requirement.
Technical Data:
Item | Units | Product Specification |
Thickness | mm | 0.2~4 |
Width | m | 2.5~8 |
Tensile strength | Mpa | ≥18 |
Break elongation | % | ≥650 |
Tear resistance | kN/mm | ≥100 |
Water vapor penetration resistance | g. cm/c.s. pa | ＜1.0×10-13 |
Using temperature range | ℃ | +70℃~-70℃ |
Advantages :
Exceptional Impermeability:
EVA geomembrane offers remarkable impermeability, ensuring that water and other fluids are effectively contained or excluded. This is crucial in tunnel waterproofing, where even the slightest seepage can cause significant damage to the structure and compromise its safety.
Chemical Resistance:
Tunnels are often exposed to various chemicals, including groundwater with high levels of minerals and potentially corrosive substances. EVA geomembrane's resistance to chemical attack ensures that it remains functional and maintains its waterproofing properties, even in harsh environments.
Flexibility and Adaptability:
Tunnels often have complex geometries and uneven surfaces, requiring waterproofing materials that can conform to these shapes. EVA geomembrane's flexibility allows it to adapt to various topographical and geometrical conditions, ensuring a tight and reliable seal.
Durability:
EVA geomembrane is designed to withstand the rigors of long-term exposure to the elements and the stresses associated with tunnel construction and operation. Its durability ensures that it will maintain its waterproofing properties over time, reducing the need for frequent repairs and replacements.
Ease of Installation:
EVA geomembrane is relatively easy to install, which can help reduce construction time and costs. It can be welded or sealed using specialized equipment and techniques, creating a seamless and impermeable barrier.
Environmental Friendliness:
EVA geomembrane is eco-friendly and non-toxic, posing no harm to the environment or the surrounding ecosystems. This is important in tunnel waterproofing projects, where the safety of the surrounding environment and potential impacts on groundwater are key considerations.
Cost-Effectiveness:
While the initial investment in EVA geomembrane may be higher than some other waterproofing materials, its long-term durability and reduced maintenance costs can make it a cost-effective solution. Additionally, its ability to prevent water damage and extend the life of the tunnel structure can provide significant savings over time.
Applications:
1. Water Resources Engineering
Dam and Levee Seepage Control: EVA geomembrane is utilized in dam and levee reinforcement to prevent water seepage, ensuring the structural integrity of these critical water management facilities.
Canal Lining: In irrigation and drainage canals, EVA geomembrane serves as a lining material, enhancing the channel's water-holding capacity and reducing water loss through seepage.
2. Environmental Engineering
Landfill Liner Systems: EVA geomembrane is a vital component of landfill liners, providing a barrier against leachate migration and protecting groundwater from contamination.
Wastewater Treatment: It is employed in wastewater treatment facilities and chemical lagoons, preventing the release of harmful contaminants into the environment.
3. Infrastructure Projects
Tunnel Waterproofing: In tunnel construction, EVA geomembrane is used to waterproof the tunnel lining, protecting against groundwater ingress and maintaining the structural stability of the tunnel.
Reservoirs and Ponds: For the construction of reservoirs, ponds, and other water bodies, EVA geomembrane provides a durable and reliable waterproofing layer.
4. Building and Construction
Basement Waterproofing: In buildings, EVA geomembrane is applied to basement walls and floors to prevent moisture infiltration and create a dry, habitable space.
Roof Gardens and Green Roofs: It serves as a waterproofing and separation layer in roof gardens and green roofs, supporting the growth of vegetation while protecting the building's roof structure.
5. Agriculture
Irrigation Systems: EVA geomembrane is used in irrigation canals and reservoirs to enhance water delivery efficiency and minimize evaporation losses.
Aquaculture Ponds: It is a popular choice for lining aquaculture ponds, ensuring a clean and stable environment for fish and other aquatic organisms.
6. Industrial Applications
Chemical Storage Tanks: In the chemical industry, EVA geomembrane is employed as a liner for storage tanks, protecting the tank shell from corrosive chemicals and preventing leaks.
Oil and Gas Infrastructure: It is also used in oil and gas facilities, such as oil tanks and pipelines, to ensure the safe and environmentally responsible storage and transportation of hydrocarbons.
Packaging:
Customer's company Logo mark can be added.
Packed in woven bags.
Q&A:
Q: What can you buy from us?
A: Geomembrane,Geogrid,Geocell, Geotextile, Geocomposite, and so on.
Q: Can I have a sample?
A: Yes. And sample free.
Q: What's the payment terms?
A: T/T or L/C. Others could be negotiated.
