Specifications

Composite Drain Net
1It is geonet drainage heat bonded with needle punched non woven
geotextile

   Composite Drain Net

Product Description

Tri-dimension composite geonet 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.

 

 

Typical applications

In landfill cover systems  geocomposites are used to drain surface water away from the barrier layer decreasing percolation of water into the waste.  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 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 gecomposiye Drain may be used underneath the primary liner as the leak detection layer.

 

Features

 

Geo-Net, also called drainage net, is a cost effective alternative to aggregate drains in containment systems. Geo-Nets take up less space than aggregate drains and can help to maximize volume in landfills and surface impoundments. Geo-Nets are commonly used between two geomembrane liners as part of a leak detection system. When placing Geo-Nets with geotextiles it is often effective to have the geotextile bonded to the Geo-Net in the factory. Geocomposites usually have a geotextile bonded to one, or to both sides of a Geo-Net. This creates a drainage structure that can be used between layers of geomembranes, and in many other unusual situations. The geotextile layers prevent the movement of soil fines into the Geo-Net drainage path that could lead to clogging and drainage failure.

 

 

 

Product Technical Parameters

Item			unit		Value
Unit weight			g/m²		750		1000		1300		1600
thickness			mm		5.0		6.0		7.0		7.6
Hydraulic conductivity			m/s		K×10-4		K×10-4		K×10-3		K×10-3
Elongation			%		<50
Net tensile strength			KN/m		8		10		12		14
geotextile unit weight	PET needle punched geotextile	g/m²		200-200		200-200		200-200		200-200
	Filament non woven geotextile
	PP high strength geotextile
Tri-dimenstional tensile strength	PET needle punched geotextile	KN/m		18		20		22		25
	Filament non woven geotextile			30		35		38		40
	PP high strength geotextile			35		38		40		45
Peel strength between geotextile and geonet			KN/m		3