Bentofix® NWL-45 Thermal Lock® Geosynthetic Clay Liners (GCLs)

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Bentofix® Thermal Lock® Geosynthetic Clay Liners (GCLs) are needle punch reinforced composites which combine two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier. Fibers from the cap/top nonwoven geotextile are needle punched through the layer of bentonite and incorporated into the carrier/bottom geotextile (either a woven or a nonwoven). A proprietary heat treating process – the Thermal Lock process – is then used to modify and more permanently lock the needle punched fibers into place by best burnishing the carrier geotextile surface. Unique properties, including increased internal shear resistance and long-term creep resistance result from this production.

When hydrated under a confining load, the bentonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay. The excellent hydraulic properties and slope performance of the Bentofix® Thermal Lock® GCLs make the product ideal for many lining and cap containment projects.

Primary features of the Bentofix® GCLs:

	High internal shear strength
	Uniform bentonite content
	Excellent installation durability
	More versatile than compacted clay
	Increased airspace and liner efficiency
	Improved leakage performance

Bentofix is a registered trademark of NAUE GmbH & Co. KG.