Retaining walls for basement construction, flood defence schemes, cofferdams or any other purpose may be built economically utilising wet soil mixing if the ground conditions are suitable.

Granular materials such as sands and gravels are mixed in situ with cement slurry to form solid retaining walls utilising our triple auger system fitted to a telescopic leader rig. The triple augers create a continuous secant wall and reinforcing is installed as required to provide the design strength for retention. The whole in situ soil mixing process is monitored by a computer inside the piling rig and records given to the client for quality assurance purposes.

The ecological and economic benefits of this soil mixed retaining wall system are huge. No spoil is removed, so there is no need for costly transport and disposal costs. Fewer lorry movements are required as the cement is conveyed in a large tanker rather than concrete which comes in small quantities and frequent truck visits.

By utilising the soil in the ground precious supplies of aggregates are reduced, thus overall reducing the carbon footprint of the project.