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Product by Category > Geosynthetic Clay Liners > Bentofix® GCL – Textured Coated


Highlights

  • Economical Alternatives To Traditional Containment Methods
  • Products Stocked Locally In Australia
  • Quality Products To International Standards
  • Thermal Lock Process
  • Wide Width Rolls

General Information

The use of liners in civil and environmental applications is becoming more widespread as there develops a greater understanding of the effects of contaminated ground conditions on structures and the environment.

Global Synthetics are able to offer a wide range of liners that are compatible with the diverse range of applications and contaminants likely to be encountered.

Product Information

Bentofix® Geosynthetic Clay Liner (GCL) is a factory produced wide width rolls of bentonite “sandwiched” between layers of geotextile. GCL’s are an engineered replacement for traditional clay lining of proposed containment structures.

Global Synthetics Geosynthetic Clay Liners offer the designer an engineered equivalency to clay without the costly import and placement and quality control costs associated with this traditional method. The volume of containment may be significantly increased with the use of a Global Synthetics Geosynthetic Clay Liner as the product offers equivalency to very thick layers of compacted clay.

Bentofix® Geosynthetic Clay Liner – XF Series

Bentofix® GCL with nonwoven cover geotextile and woven carrier geotextile. An additional surface polyethylene (PE) coating is applied in a liquid state and then allowed to solidify on the carrier geotextile. The additional bonding of a PE coating to the needle-punched, fibre reinforcement is permanently locked and increases the pull-out resistance as well as the internal shear strength. The mass coating is 500gsm (0.5mm thick) minimum and upto 1000gsm (1.0mm thick) for the friction coating and exceeds the GRI-GCL3 (USA) minimum specification requirements for coated GCLs. Also features self-sealing side overlaps. The coated (friction), Xf-type GCL is used predominantly in the following applications: an immediate barrier against Radon gas; desiccation protection; small root penetration protection; bentonite erosion at high water heads and underlying coarse subgrades; or for secondary containment (providing eXtra safety factor) against hazardous liquids. The other added benefit of a friction coating is the increased interface friction value, allowing for steeper side batters, but providing significant protection against internal bentonite erosion and piping for exposed multi-lined landfill cells. Shrinkage reduction from environmental/thermal changes is also an important advantage.

The latest GCL developments are multicomponent GCLs. One method is adding a polymer extruded coating (virgin Polyethylene resin) to the needle-punched GCL (on woven side) which improves the GCL performance and provides a greater range of applications where GCLs can be appropriately used.

The additional component is a provision for the GCL to operate effectively in situations where the designer wishes to:
– Minimise root penetration into the GCL
– Increase resistance against desiccation
– Minimise bentonite piping potential under high water gradients

– Lower permeability
– Minimise the potential for ion exchange
– Minimise the potential for gas transfer

Features of Advantages of multicomponent GCL Bentofix® X

  • Versatile sealing applications possible
  • Immediate sealing and long-term performance with high-swelling sodium bentonite powder and durable PE coating
  • PE-coating gives add-on values (improved fluid barrier, desiccation resistance and root barrier, as well as protection against ionic exchange and piping)
  • Direct coverage with concrete and lime possible
  • Shear resistant overlaps possible with special adhesive tapes
  • Out performs compacted clay liners
  • Self-sealing length overlaps; with BFG types all overlaps self-seal
  • Quick, easy and cost-efficient installation


Case Study

Bentofix® – Canal Sealing

After the first pilot project installation of a geosynthetic clay liner (GCL) in a 1 km long section of the Havel-Oder-Waterway in 1997/98, approved by the local German Water and Ship Authority a second project followed shortly after.

View More Case Studies


Latest Posts

September 21st, 2020

Webinar Q & A Transcript Part 1: Designing Composite Liners on Slopes : GCL

Q: In order to avoid water condensation in the GCL, can we open holes in the upslope for the gases to escape?? A: This is not effective nor practical. The evaporated moisture is encapsulated under...

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August 21st, 2020

September Webinar: Designing Composite Liners on Slopes Part 1: GCL 

Don't miss your chance to hear Prof. Kerry Rowe talk about his latest unpublished research findings at our webinar on Designing Composite Liners on Slopes Part 1: GCL EVENT INFO: 2 SEPTEMBER...

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July 27th, 2020

August Webinar: Part 2 Reinforced Rail Tracks- Review of Design Guidelines and Procedures

WHEN:              13th AUGUST 2020 TIME:                 3.00PM AEST DURATION:      1HR DESCRIPTION Following on from our first successful webinar on Geogrid Reinforced...

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June 25th, 2020

July Webinar: The Effect of External Parameters and GCL Structure on GCL Hyrdration

When:          Wednesday 22 July Time:            3.00pm AEST Duration:     1 hr DESCRIPTION:  The performance of a GCL as a single liner or as part of a Composite Liner depends...

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