Soil Stabilisation & Modification

VHE has an in-house capability in lime and cement stabilisation to reduce the moisture content of cohesive soil thereby improving its bearing capacity, or to reduce the soil's permeability and prevent the leaching of contaminants.

Cement, when added to contaminated soil, forms less soluble and more stable hydration products with the contaminants. Cement mixed into soil reacts with water, forming a physical bond which immobilises contaminants. Solidification lowers the permeability of treated material, inhibiting water movement and preventing leaching.

VHE has undertaken soil stabilisation on a large number of projects. Applications include:

  • Drying wet materials in order to reduce standing time and cost.
  • Processing unsuitable material into engineering fills
  • Replacing capping layers and sub base stone by modifying in-situ materials

    Case Studies

  • Stella South Power Station, near Gateshead
  • Kings Business Park, Knowsley (Details not yet available).