To have better earthing in the buildings, you can use bentonite powder. Bentonite is a moisture-retentive clay used as a filler earth electrode to help reduce soil resistance. Conductive bentonite clay is a sodium activated montmorillonite that, when mixed with water, swells to several times its original volume when dry. Electrically conductive bentonite is a thermosetting duct fill compound that is also used to fill cable trenches containing copper electrodes, such as ground rods, as specified in Annex C of ENA TS -. The grounding compound absorbs moisture from the surrounding soil, which reduces the contact resistance and thus effectively increases the size of the copper ground rods installed and buried in the cable trench. By reducing the resistance to ground of a ground rod or electrode through a moisture retention process, the bentonite compound also reduces and protects against corrosion. Bentonite absorption rates Bentonite absorbs up to times its weight in water and moisture-retaining clay will swell up to thirteen times its dry volume; At times its dry volume, the grounding compound is very dense and, in a clay,-pasty state it can retain its shape and cling to surfaces. Bentonite is chemically hydrated and retains water in its structure: the clay compound is non-corrosive, stable in nature and will retain its properties over time. The grounding compound mixture should be pumped into the cable conduit to ensure air is excluded and once conduit filling is complete, all conduits must be closed to prevent leakage or bentonite escape.

شرکت تولیدی صنعتی دومیشا در عرصه تولید و فراوری انواع مواد معدنی فعالیت دارد. محصولات این شرکت را انواع بنتونیت سدیم و بنتونیت کلسیم، زئوبنتونیت، زئولیت و کربنات کلسیم تشکیل می دهد. محصولات معدنی در انواع دانه بندی نظیر کلوخه، دانه بندی شده در سایز های متنوع و پودر میکرونیزه در مش های مختلف به بازار عرضه می گردد.

Bentonite powder is a very ancient clay that has been used as a remedy for many things. Fine dust forms when volcanic ash ages. It is named after Fort Benton, WY, which has many. But it is found all over the world. It is also known as montmorillonite clay after an area in France with large deposits. You may hear it called calcium bentonite clay. People have eaten or applied bentonite clay to their skin for thousands of years. It has been used for: Clean or protect the skin Treating skin infections or acne. Treat stomach gas relieve diarrhea Today, bentonite is used in the pharmaceutical and makeup industries. You can also buy it in powder and tablet form. It is sometimes used in: Bentonite clay is absorbed: it attracts particles, such as dirt, to the skin. It also absorbs, and absorbs a lot of water.

One of the uses of bentonite powder is in construction especially earthing.Bentonite is used to reduce resistance to ground by providing ground enhancements that effectively reduce the resistance between the ground and the ground electrode (such as copper ground rod or ground mats) by retaining moisture. This inherent ability to absorb and retain rainwater increases the electrical conductivity of the grounding compound in positive correlation with local climatic conditions, specifically average precipitation levels. The compound typically has a resistance level of ohms.m Bentonite compound is a cost-effective material for backfilling ground electrodes and improving performance where it is virtually impossible to drive ground rods deeper and where ground conditions soil is difficult, such as rocks, granite, etc. Chemical remediation or backfilling of the soil in the vicinity of the underground grounding electrode site is an established and traditional method to reduce the grounding resistance of substation grounding in high-impedance ground, such as backfilling for improve electrical grounding which is commonly used in low voltage medium voltage. Applications. When soil and ground conditions are or are suspected to be highly acidic, alkaline, filler grounding compounds or materials such as bentonite can significantly extend the life cycle of bare copper ground rods and tapes. In addition, bentonite retains water, which increases the contact surface with the ground and therefore reduces the resistance to grounding. Carbon-containing backfill often contains other contaminants, such as sulfur and other elements harmful to copper, and should be avoided.

The plasticity and viscosity of the earthing compound ensures simple installation and use by the utility or civil engineering contractor &#; there is no precise mixing ratio and this varies according to local electrical utility and DNO engineering standards and preferences related to ground conditions and resistivity readings. The compound should be mixed thoroughly and vigorously with water to achieve an even consistency in slurry type form to suit pouring into the cable trench, bore-hole or worksite.