Geonet

Drainage geonet (also called geotextile composite drainage geonet) is a new geosynthetic material. It consists of a 3D HDPE core with non-woven geotextile laminated on one or both sides.
Core: Forms continuous drainage channels, maintaining drainage capacity under high loads, with good tensile, shear, corrosion, and aging resistance.
Geotextile: Filters and separates soil to prevent clogging, while protecting and reinforcing the core.
Function: Combines filtration, drainage, ventilation, and protection. It replaces traditional sand/gravel layers, making construction easier and drainage more efficient.
Main uses: Landfill leachate and gas drainage, highway/railway subgrade drainage, tunnel/underground structure drainage, slope and retaining wall drainage, roof garden and sponge city rainwater management, airport and sports field drainage.