Triaxial Composite Geonet Drain

Zhonglong Triaxial Composite Geonet Drain is a geosynthetic product made by bonding a geonet drain core to one or two layers of geotextile using a thermal bonding process. The core is made of high-density polyethylene (HDPE) used to collect and convey water or gas. The geotextile layers act as filter, keeping small particles out of the drainage channels while allowing water to pass through.

Composite geonet drain can replace gravel or sand drainage layers (approximate 1m thick) and be used for landfill leachate collection, roadway subgrade drainage, retaining wall drainage, tunnel waterproofing and green roof systems.

Raw Materials: HDPE (Net Core) + PP/PET (Geotextiles)

Packing Method: Bagged Rolls

product details

Production Line Process and Laboratory

Our company adopts latest domestic production equipment.

In order to ensure 100% product pass rate, quality control department of the company to implement the production line inspection and random inspection of finished products, for the quality of product of the “Zhonglong” brand to provide double insurance.

Specifications of Product

Thickness	5–8mm
Length/Roll	30–50m
Width	3m，4m，6m

Technical Parameter

Download File: Zhonglong Drainage Geonet TDS

CJ/T 452-2014

No.	Item	Index
No.	Item	Geonet Drain	Geocomposite Drain
1	Density g/m³	≥0.939	--
2	Content of carbon black %	2~3	--
3	Longitudinal tensile strength KN/m	≥8.0	≥16.0
4	Longitudinal hydraulic conductivity (Normal load 500kPa, hydraulic gradient 0.1) m²/s	≥3.0×10^-3	≥3.0×10^-⁴
5	Peel strength KN/m	--	≥0.17
6	Mass of Geotextile per unit area g/m²	--	≥200
Note: Technical indexes of geotextile shall meet the requirements of GB / T 17639

Thickness and Deviation

No.	Item	Index
1	Width (mm)	5.0	6.0	7.0	8.0
2	Deviation (%)	≥0

Characteristics of Product

Advanced Structure

Triaxial ribs enhance durability. It can endure high tensile strength, able to withstand high-pressure loads for a long time (able to withstand compression loads greater than 3000 kPa). It has great chemical resistance, long service life, lower cost and convenient construction.

Efficient Water Management

Inclined ribs on the top and bottom of geonet drain improve water transmissivity. It make the geonet can rapidly drain underground water, block capillary water under high construction loads and maintain optimal thickness for enhanced water conductivity. These deliver strong drainage capacity (equivalent to 1 m thick gravel drainage), effectively replacing traditional sand and gravel systems.

Comprehensive Performance

Geocomposite drain has functions of filtration, drainage, ventilation and protection. And it provides isolation for foundations and reinforces structural integrity, which reduce the probability of geotextile embedding and maintain long-term stable water transmissivity.