Soil Stabilisation involves the introduction of cementious or specially formulated solutions directly into the ground through the use of purpose built blending injection augers. The system is designed to achieve reduced permeability and/or increased strength within the soil mass.
Soil Stabilisation can improve the engineering performance of soft cohesive deposits, expansive clays, loose granular soils and pulverised fuel ash (PFA) lagoons through the direct blending of cementious compounds or lime based slurries.
The structure of the soil is modified and the moisture content of cohesive soils reduced, leading to considerable improvement in bearing capacity. This technique is a cost effective alternative to importing aggregates for both temporary and permanent works.
For contaminated soils, during solidification, 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.
Containment Walls - Soil Stabilisation can be used to form highly efficient cut off walls within or around contaminated sites without needing to dispose of large volumes of contaminated spoil.