Soil mix - CSM wall

As a solution for the construction of a long, continuous retaining wall - its main area of application - the cutter soil mix wall (CSM wall) consists of adjacent or intersecting parallelepipedic panels. The panels are formed by intensive, in situ mechanical mixing of soil with a continuously injected hydraulic binding agent, usually cement. The retention function of the mixed soil CSM wall is induced by the development of arching after curing of the « soil-binder » mixture in between the steel profiles, inserted into the freshly mixed wall panels.

Construction sequence

In accordance with the requirements of standard  prEN 14679: “Deep Mixing”

Fields of application

• Suitable as an earth retaining wall and cut-off wall solutions (phases 1 to 6), or as a soil improvement technique (phases 1 to 5 of the installation process).

• The placement of reinforcement beams such as steel profiles, inserted to withstand the shear and bending stresses acting on the retaining wall, ensures the load-bearing function of the wall and optimizes its stability.

• Alternative solution to the ‘Berlin’ retaining wall or the pile wall

• Favourable in sandy soils with limited fine grain distribution fraction (less suitable application in silty and clayey soils)

Environmental impact

• Discharge of the soil-cement slurry, no removal of soil, very little spoil is generated

• Vibration-free

• No noise pollution

• The slurry handling plant for mixing and pumping requires an working area of at least 100.

Technical specifications

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