Geonet from TYNOD
Geonet is a high-performance geosynthetic material designed to provide excellent drainage, separation, and reinforcement functions in civil engineering and environmental projects. Manufactured from high-density polyethylene (HDPE), geonets feature a unique net-like structure that offers high flow capacity and long-term durability. TYNOD, with over 15 years of industry expertise, supplies a wide range of geonets to meet the needs of infrastructure, environmental protection, and construction projects worldwide.
Single Layer Geonet
Cost-effective drainage for basic projects
Double Layer Geonet
High flow capacity for subgrade drainage
3D Geonet
Strong compressive performance
Geonet Composite
Drainage + Filtration in one layer
Applications of Geonet
Geonets play a critical role in various infrastructure and environmental applications. Their unique drainage and reinforcement properties make them an essential material for modern construction projects.
Landfill Drainage Systems
Geonets are used for leachate collection, gas venting, and drainage layers in landfills. They provide consistent flow capacity, ensuring environmental safety and preventing contamination of surrounding soil and groundwater.Road and Railway Subgrades
When placed beneath road or railway layers, geonets improve drainage, reduce water accumulation, and extend pavement life. They prevent soil migration and maintain the structural integrity of the roadbed.Retaining Walls and Embankments
Geonets act as drainage layers behind retaining walls and embankments, relieving hydrostatic pressure and improving structural stability.Tunnels and Underground Structures
In tunnel lining systems, geonets effectively channel groundwater away, protecting waterproofing membranes and prolonging the structure’s service life.Green Roof and Landscaping Projects
Three-dimensional geonets are used in green roofs to provide efficient drainage and root protection, ensuring healthy vegetation growth while preventing waterlogging.Mining and Industrial Applications
Geonets are applied in heap leach pads and other drainage-intensive areas, ensuring efficient fluid management under heavy loads and challenging conditions.
Advantages of TYNOD Geonet
Choosing TYNOD geonet products ensures superior performance and long-term reliability for your projects. Our geonets are designed to meet international quality standards and deliver consistent results across diverse applications.
Excellent Drainage Capacity
The specially engineered rib structure provides continuous flow paths, ensuring high in-plane flow rates even under compression. This makes geonets ideal for critical drainage applications.High Strength and Durability
Made from HDPE, TYNOD geonets offer exceptional resistance to chemical attack, biological degradation, and UV radiation. This ensures long-term stability in harsh environments.Efficient Load Distribution
The tri-planar and three-dimensional structures maintain flow capacity under heavy loads, providing reliable drainage without clogging or deformation.Versatility
Available in multiple types and configurations, geonets can be used for landfill drainage, civil engineering structures, green infrastructure, and industrial applications.Easy Installation and Cost-effectiveness
Geonets are lightweight and flexible, making them easy to handle and install. Their long service life and minimal maintenance requirements offer significant cost savings compared to traditional drainage systems.Environmental Protection
By providing effective leachate collection and groundwater protection, TYNOD geonets support sustainable construction and environmental management.
Why Choose TYNOD Geonet
With more than 15 years of experience in geosynthetics production and export, TYNOD is a trusted one-stop supplier for global infrastructure and environmental projects. We offer:
A full range of geonet types and composite solutions
Strict quality control and testing to meet international standards
Technical support and product customization
Competitive pricing and reliable delivery worldwide
TYNOD geonets have been successfully applied in road construction, landfill projects, mining sites, green roof systems, and tunnel drainage in South America, the Middle East, Africa, Southeast Asia, Europe, and beyond. Our reputation for quality, reliability, and professional service makes us a preferred partner for engineers, contractors, and distributors worldwide.
FAQ: Have Questions About Geonet?
1. What is the main function of Geonet in drainage systems?
The primary function of geonet in drainage systems is to provide a high-capacity, three-dimensional flow path for fluids. Geonet is typically made from HDPE and features a unique net-like structure that efficiently collects and channels water or leachate within various civil engineering and environmental applications.
In landfills, geonet is used as an internal drainage layer to collect leachate beneath the geomembrane liner system. In retaining structures and subsurface drainage applications, it prevents water build-up by rapidly transmitting fluids to designated collection points. Unlike traditional drainage gravel, geonet offers a lightweight, durable, and clog-resistant alternative, maintaining long-term drainage performance under high compressive loads.
2. How to select the right Geonet type for my project?
Choosing the right geonet type depends on the project’s hydraulic requirements, compressive loads, chemical exposure, and installation conditions. Here are key factors to consider:
Transmissivity under confining pressure: This determines the actual flow capacity of the geonet once it’s buried under soil or other loads. Always check test data at site-specific pressures.
Compressive strength: Ensure the geonet can resist deformation under the expected overburden loads without losing flow capacity.
Chemical and biological resistance: For applications such as landfills or contaminated sites, confirm compatibility with potential leachates or chemicals.
Thickness after compression: Different geonet profiles behave differently under pressure — triplanar geonets typically retain better flow under load compared to biplanar types.
Durability and service life: Consider long-term performance, especially for permanent drainage systems.
Consulting the manufacturer’s technical datasheets and ASTM test reports (e.g., ASTM D4716 for transmissivity) is crucial to ensure the geonet type matches your design parameters.
3. Can Geonet be used in combination with Geotextile or Geomembrane?
Yes, geonet is commonly used together with geotextiles and geomembranes to form composite drainage systems. These combinations enhance performance and provide multiple functions in one installation:
Geonet + Geotextile (Drainage Composite): A geotextile is laminated or laid on one or both sides of the geonet. The geotextile acts as a filter, allowing water to pass through while preventing soil particles from clogging the geonet core. This setup is ideal for subsurface drainage, retaining structures, and landfill leachate collection layers.
Geonet + Geomembrane (Protection + Drainage): In landfill caps, ponds, or reservoirs, geonet is placed between geomembranes and protection layers to provide drainage while reducing mechanical stress on the geomembrane. It also prevents uplift or hydrostatic pressure buildup beneath liners.
Geonet + Geotextile + Geomembrane (Triple System): This full composite assembly is often used in critical containment structures, offering filtration, drainage, and liner protection in one system.
Proper compatibility checks—such as filtration criteria, chemical resistance, and interface friction—should be performed to ensure the system’s long-term stability and performance.
4. What are the flow rate standards of Geonet?
Geonet flow capacity is typically expressed in terms of transmissivity, measured in m²/s, according to ASTM D4716. There is no single “standard flow rate,” because actual performance depends on the geonet profile, compressive pressure, hydraulic gradient, and installation conditions.
Key points regarding flow rate standards:
Biplanar Geonet: Offers good flow capacity under moderate loads but may compress more under high pressures.
Triplanar Geonet: Designed with a rigid central rib structure, maintaining higher transmissivity under significant overburden, making it suitable for landfill leachate or heavy civil drainage.
Test Conditions Matter: Manufacturers typically provide transmissivity test data at specified confining pressures (e.g., 100 kPa, 200 kPa). These values are critical for drainage design.
Design Safety Factors: Engineers usually apply reduction factors for creep, intrusion, chemical clogging, and installation damage to determine the long-term design flow capacity.
When selecting a geonet, always request transmissivity test reports under site-specific confining pressures to ensure reliable hydraulic performance throughout the design life of the structure.