Slurry Walls

Slurry Walls is a sound and proven technology for the installation of cut-off barriers most often used to intercept ground water migration.

Why is it used?

  • To interrupt water flow within soil or rock
  • To inhibit the transmission of contaminants
  • To contain and capture contaminants
  • To eliminate erosion arising from water transmission

How does it work?

Slurry Walls are installed as trench excavations whereby in-situ materials are removed and replaced by a relatively impermeable backfill material. The trench is excavated through a supporting fluid, usually bentonite or bentonite cement suspension, over the depth designed for the barrier. The supporting fluid may be replaced in the backfilling operation, as with bentonite, or may be self-hardening, thereby eliminating the need for backfilling but requiring the removal of excavated material, as with bentonite cement.

Advantages

It is a cost-effective method for environmental containment of water born contaminants, for the installation of reactive groundwater barriers or drainage barriers, for the purposes of pollutant containment for landfills or heavily contaminated industrial sites.

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