TexDrain™ Geocomposites

TexDrain is a chemically resistant composite comprised of a three-dimensional extruded polyethylene geonet core, thermally laminated to non-woven geotextiles on either one or both surfaces.

Function

TexDrain drainage geocomposites consist of a polyethylene geonet core with nonwoven geotextiles bonded to one or both sides. They serve as a cost-effective substitute for granular soils in various drainage and gas venting applications. The biplanar geonet core provides a high flow capacity and is also available in different thicknesses to meet a wide range of performance requirements. The nonwoven geotextiles serve as a separation layer between the geonet and adjacent soils, preventing soil intrusion and clogging of the geonet core. In addition, nonwoven geotextiles provide good interface shear strength with adjacent geomembranes and soil.

Applications

In landfill cover systems TexDrain geocomposites are used to drain surface water away from the barrier layer decreasing percolation of water into the waste. TEXDRAIN geocomposites may also be used as a gas venting layer below the barrier layer to prevent the build-up of gases generated by degrading waste or underlying soils.

In landfill bottom liner systems TexDrain geocomposites are used above the primary liner for leachate drainage and as a leak detection layer between the primary and secondary liners.

Similarly, in liquid impoundments TexDrain may be used underneath the primary liner as the leak detection layer.

Features and Benefits

• Cost-effective substitute for thick layers of coarse-grained soil in drainage applications, providing savings on materials, transportation installation and airspace.
• Preserves aggregate resources for structural applications where alternative materials can’t be used.
• Three functions in one unit: filtration, drainage and protection.
• Rapid installation in comparison to conventional soil drainage layers.
• Wide range of product combinations allows performance driven product selection at an economical price.
• Chemically resistant polyethylene geonet and polypropylene geotextile construction provides long life in harsh environments.
• Exhibits good interface shear strength with adjacent geomembranes and soil, allowing a high factor of safety against sliding.

Associated Documents

• TexDrain Geocomposites Brochure
• Specifications and Physical Properties
• Other Literature