20 years of Cutter Soil Mixing (CSM) - Yesterday, Today, Tomorrow

The development of the Cutter Soil Mixing (CSM) method started in a joined development of BAUER Maschinen GmbH and Soletanche Bachy back in 2003. The system was presented for the first time at BAUMA Munich in 2004. Since its presentation in 2004, the equipment technology has developed considerably. Either driven due to project requirements, or to manufacturer's intention. The CSM equipment introduced 2004 enabled a mixing width of 500 mm and a depth of 13 m. In the meantime, mixing widths of up to 1524 mm and mixing depths of up to 80 m have been realized. With the CSM technique an expansion of the use of soil mixing became possible. Either in depth or in soil conditions, which were limited in their use. Therefore, the CSM methodology can be seen as a valuable contribution to the deep mixing industry. In the last 20 years, more than 100 CSM units have been distributed worldwide. This paper will give an insight into project-related and equipment-related milestones regarding CSM. As well, the paper will provide an overview of the beginnings of the CSM method, the current technical status, and an outlook on future developments.