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Soil mix - Triple pile wall
Construction sequence
Triple rod mixing installation process, in accordance with the requirements of standard prEN 14679: "Deep mixing” - Deep Soil Mixing or DSM (wet DMS method
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Fields of application
• Alternative solution to the ‘Berlin’ retaining wall or the secant pile wall
• Economical solution
• No decompression of soil
• Depending on the calculations and the desired function of the wall:
sheet piles could be vibrated in
profiles could be inserted (Berliner wall induced by the development of arching)
anchors could be made (for anchorage of MIP as a retaining wall)
Environmental impact
• Provision should be made to remove from the working platform the excess volume of cement slurry
• Vibration-free
• Limited noise pollution
Technical specifications
• Retaining function: depending on the geotechnical design
• Construction of a cutt-off wall with mixed in place columns (sealing): depending on the calculations, the properties of the slurry and the overlap between the secant columns.
• Thickness: 0.40 m
• Depth: standard less than 20 m
• The soil is loosened and mixed with the suspension by means of a mixing unit consisting of slightly overlapping, multiple augers fixed on rods, all on the same line, attached on a rig.
• For structural purposes (withstanding bending moments), subsequent insertion of reinforcement elements or profiles in the freshly made columns is done.
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