Bentonite Moisture Retaining Clay

Bentonite is a moisture-retaining clay which is used as an earthing back-fill on installed earth rods or mats which helps to lower soil resistivity. The natural clay is a sodium-activated montmorillonite which when mixed with water, typically swells to twice its original dry volume.

Bentonite has the ability to hold its moisture content for a considerable period of time and has the ability to absorb moisture from the surrounding soil or from rainfall. Widely used throughout Northern Europe as the standard ground enhancement material.

Bentonite clay is available in two forms: Bentonite Granules and Bentonite Powder, the powder version being easier to mix into a slurry and pour into core-drilled holes around earth rods.

• Resistivity: 3.0 ohm/metre
• Versatile: Suitable for most ground conditions
• Natural: Non-toxic, naturally occurring compound