Soil Mixing

The technique leads to significant improvement of the mechanical and physical properties of the in-situ soil. The resulting stabilised soil generally has a higher strength, lower permeability and lower compressibility than the original soil. For environmental treatment, chemical oxidation agents or other reactive materials may be also used to render pollutants harmless.

Quinn Piling offer a wet soil mixing system whereby a cement slurry is pumped out through nozzles at the base of the specialist mixing tool. As the tool moves up and down the slurry and the soil are thoroughly mixed to ensure homogeneity of the mixed column. The lifting rate, speed of tool rotation and pumping rate of the slurry are carefully controlled to achieve the required design properties. Column sizes typically range from 0.75m to 1.5m.

Quality control is achieved by careful implementation of installation procedures along with relevant field and laboratory testing. For each column a log of tool diameter, mixing depth, rotation speed, slurry injection flow rate, tool penetration and rotation velocities etc can be provided to help ensure that the work is carried out in a consistent, controlled and verifiable manner.

Quinn Piling have designed a number of soil mixing tools of various diameters and configurations, which are designed to deal with different ground conditions and applications.