Bentonite is used as a backfill to reduce soil resistivity. When mixed with water, it swells to several times its dry volume. This moisture content can be retained for a considerable time and further moisture can be absorbed during rainfall etc. Bentonite can be supplied in either powder or granular form.
Approximately 18 x 25kg bags create a volume of 1m³ (depending on soil and excavation conditions).
Material: Sodium carbonate activated calcium montmorillonite clay. The product is a naturally occurring substance with no known ecological hazards, and can be disposed of as nonhazardous waste.
Granular: Granular is the preferred option for filling trenches. The conductor is surrounded with Bentonite and then water poured over and mixed in the trench.
Powder: Powder is the preferred product for pouring into bore holes, ensuring the mixture is of a thin enough consistency to reach the bottom of the bore hole.
For installing lightning earthing system applications, We recommend the use of Copper earth electrode systems due to their inherent low resistivity and corrosion resistance.
Materials used in earthing systems must be able to:
- withstand mechanical damage,
- resist corrosion,
- provide a low impedance path to earth,
- and carry the maximum fault condition for the application/installation.
For protective earth networks and lightning protection applications our range encompasses:
Copper earth rod, earthing pole, copper bonded ground rod, earth ground rod, earth rod connector, earth rod cover, earth fitting, earthing studs, ground clamps for ground rod, ground pole and grounding post.
Our castings are high quality/high copper content complying to BS 7430 and BS 62561-1. Additional to our range are UL listed copperbond earth rods and exothermic welding.