Geosynthetic barriers

An HDPE geomembrane is a continuous polymer sheet welded at every seam. A GCL (Geosynthetic Clay Liner) is a needle-punched bentonite mat that swells on hydration and seals by overlap – self-healing of small damage.

Carbofol^® HDPE has a documented service life of more than 100 years according to BAM suitability assessment, provided correct installation with a high-strength protection nonwoven above the liner.

On complex geometries, where small damages should self-heal and where welding crews cannot be deployed easily – e.g. landfill capping, contaminated land closure and tunnel linings.

Yes. Bentofix^® can be installed under controlled hydraulic conditions and will hydrate in place. Project-specific guidance is available from the Naue’s Engineering and Design Department (EDD).

Yes. All relevant Carbofol^® and Bentofix^® variants carry CE marking under CPR 305/2011 and conform to BS EN 13361 / 13491 / 13492 / 13493.

Hot-wedge welders for double-track seams and extrusion welders for repairs and details. Welder operators must hold current certification – Naue can supply or audit the welding crew.

Yes. Bentofix^® X and Bentofix^® + X provide high internal shear strength (Thermal Lock needle-punching) and are routinely used on landfill capping slopes up to 1V:2H and steeper, depending on cover material and friction interface.

For HDPE: vacuum box, air-channel and peel/shear testing per GRI-GM 19 / 21, with full panel and seam logs. For GCL: overlap and overlap-bentonite-supplement records per panel.