GeoDrain LD 420 – 700 kN/m² Cuspated Leak Detection Core for Double Liner Systems

GeoDrain LD cuspated cores provide the leak detection drainage layer between primary and secondary geomembranes in municipal solid waste, industrial waste and hazardous waste landfill cells. Leachate passing through the primary liner transmits in-plane to collection sumps where flow rate is monitored for liner integrity assessment.

Industrial containment bunds for chemical storage, fuel storage and process facilities require a leak detection layer between double geomembrane liners. GeoDrain LD provides the drainage core at compressive strengths matched to the bund loading and fluid chemistry requirements.

Tailings storage facilities impose high and sustained overburden loads on lining system components. The GeoDrain LD 700 at 1300 kN/m2 with confirmed 100-year creep performance to ASTM D 7361 is specified for TSF leak detection layers where long-term load retention is a regulatory and design requirement.

Water storage dams and lined reservoirs use GeoDrain LD sheets as the drainage and leak detection layer beneath the primary geomembrane liner. The smooth cuspated interface protects the liner from subgrade contact damage while providing a drainage path for any seepage to monitoring points.

The LD 420 is a single cuspated polyolefin mix drainage core at 700 kN/m2 compressive strength for leak detection applications in standard landfill cells and containment systems. Installed between primary and secondary geomembranes, it transmits leachate flow in-plane to collection points while maintaining a smooth interface against both membrane faces. Roll width 2.35m to 4.7m, roll length 60m. CE certified to EN 13252.

The LD 500 is a single cuspated polyolefin mix drainage core at 1000 kN/m2 compressive strength for intermediate to high-load landfill cells and containment bunds. High Pressure OIT above 600 minutes confirms antioxidant retention under aggressive leachate conditions. Retained thickness of 92.89% at 200 kPa over a 100-year design life. Roll width 2.35m to 4.7m, roll length 55m. CE certified to EN 13252.

The LD 700 is the highest compressive strength product in the GeoDrain LD range at 1300 kN/m2. Designed for deep landfill cells, high-load containment facilities and tailings storage where sustained overburden loading is a long-term design consideration. Retains 87.39% of thickness at 500 kPa over a 100-year design life confirmed by ASTM D 7361 creep testing. High Pressure OIT above 600 minutes. Roll width 2.35m to 4.7m, roll length 45m. CE certified to EN 13252.

The LD 6 is a 6mm HDPE single cuspated drainage core at 800 kPa compressive strength for liner drainage, passive gas venting and leachate transmission in containment applications. The narrow 0.97m roll width suits detailed lining system work and edge drainage configurations. Maintains in-plane flow capacity of 2.0 l/(m·s) at hydraulic gradient i=1 from 20 kPa to 200 kPa load. Also available with bonded PP geotextile filter layer on request. Roll width 0.97m, roll length 100m.