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bidim C Range nonwoven geotextile is the World’s first commercial conductive geotextile made possible with geotextile graphene technology. It has been designed to provide an effective, lower cost means for designers and installers of lining systems for landfill, tailings dams and water storage facilities to undertake liner integrity surveys in newly constructed containment cells, providing reliable leak detection of liner pin holes down to 1mm in diameter.
Function
bidim C Range offers an effective, lower cost means for designers and installers of lining systems to undertake liner integrity surveys in newly constructed containment cells.
Graphene, a two-dimensional sheet of carbon atoms, is the lightest, strongest, most electrically conductive substance yet discovered.
Graphene is regarded as the “wonder material” of our time because of its unique and exceptional properties including:
- Thinnest known material
- Largest surface area to volume ratio
- Most stretchable crystal
- Record thermal conductivity
- Transparent
- Impermeable to all gases except water vapour.
Applications
bidim C range is recommended for use in double lined systems in waste, containment and landfill applications when installed below the primary liner. Recommended applications include:
- Landfill – newly constructed cells
- Tailings dams – new dams
- Potable water storage facilities – new facilities
- Double lined tanks
- Anywhere a geomembrane is used.
Advantages
Using bidim C Range reduces the need for water in surveys as a circuit can be completed without using water and/or relying on a wet subgrade.
This technology is particularly efficient in dual lining applications when installed below the primary liner.
bidim C Range nonwoven geotextiles are manufactured in Australia to ISO 9001 standards and available in rolls up to 3m wide. They provide excellent filtration and feature a strong three-dimensional structure with high elongation.
bidim C range nonwoven geotextiles also have a high melting point and high UV resistance.
Installation
The technology built into bidim C Range only requires overlap of the geotextile to deliver the conductivity required for pin hole detection in a membrane layer above using standard liner integrity survey equipment.
There is no welding required and the geotextile does not contain any wires - meaning installation does not require special skills or equipment. Just roll it out with approximately 100 mm overlap on all edges.
Spark or arc testing can be conducted to ASTM D7953 at as low as 1kV.
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