Deep Soil Mixing is a soil improvement technology used to construct cutoff or retaining walls and to treat contaminated soils, in-situ. This is accomplished with a series of overlapping stabilized soil columns (typically 24 to 56 inches in diameter and greater than 40-feet in depth). The stabilized soil columns are formed by a series of mixing shafts (2 to 4), guided by a crane-supported set of leads. As the mixing shafts are advanced into the soil, (grout or slurry) is pumped through the hollow stem of the shaft and injected into the soil at the tip. The auger flights and mixing blades on the shafts blend the soil with the (grout or slurry) in pugmill fashion.  more >>>