sealing soil

Hauff-Technik Sealing Sand DiSan in Detail

Hauff-Technik sealing sand is a flowable, mineral-based sealing solution made from a mix of different sands and bentonite. This sand sealant boasts an exceptionally fine, optimized grain size of 0/2 mm. It is conveniently packaged in 20-kilogram bags, simplifying handling and transport.

Hauff-Technik Sand Sealant in Practical Use

Local network and transformer station floors are often designed in an open manner, allowing numerous cables to enter the ground directly without barriers. These cables then extend to homes, other distribution stations, and main lines. The use of traditional entry systems and standard seals from building services is not feasible due to the high volume of cables, and the stations typically lack a foundation for embedding.

This configuration leads to significant challenges, as moisture can easily penetrate through the exposed soil. Extreme weather events frequently result in water seeping into the stations, particularly at the points where cables transition to the ground, which have proven to be weak spots. In many instances, heavy rainfall alone is sufficient to flood the distribution stations, causing severe damage and incurring substantial costs for operators.

Hauff-Technik sealing sand provides an elegant solution to this issue by reliably sealing these vulnerable areas. When in contact with water, the sand transforms into a hard, impermeable sealing mass. Its application is straightforward, requiring no preparation of the ground, and it is unaffected by the size of the area or the number of cables exiting the station. The sand can be easily poured over the exposed area and around existing cables, without necessitating complex post-processing. Only compaction with a tamper or hand tamper is needed, enabling the sealing mass to be applied quickly and nearly tool-free.

These attributes make Hauff-Technik sand sealant an ideal solution for sealing transformer stations, especially in scenarios where other sealing elements are not suitable. Additionally, it serves as an effective and economical renovation solution in areas where rising moisture has posed problems. To create a reliable and long-lasting sealing element, a minimum layer thickness of 30 cm is recommended. For conditions with high water pressure, using a greater quantity of sealing sand can enhance its effectiveness.

The required thickness of the layer depends on the anticipated water column. For a maximum water column of 100 cm, a minimum filling height of 80 cm of Hauff-Technik sand sealant is necessary. A sand sealant height of 140 cm can effectively contain a water column of up to 200 cm. DiSan from Hauff-Technik effectively prevents moisture infiltration during both summer and winter frost. The sand sealant has already demonstrated its suitability in practical applications within distribution stations.