As an eminent deep soil mixing contractor, Schnabel understands that the right soil mixing technique is fundamental to constructing resilient earth-retention solutions. When executed carefully, this method produces a soilcrete mixture characterized by an increase in strength and a reduction in permeability.
One advantageous use of soil mixing is in the building of earth-retaining structures necessitating groundwater cutoff. In such projects, Schnabel’s approach usually involves drilling a sequence of overlapping soilcrete columns to construct a persistent groundwater cutoff barrier.
To improve the strength of the soilcrete, steel piles are integrated while it is still moist. This resulting increase in the toughness of the modified ground enables it to extend between the piles. The permeability reduction of the soil mix wall permits the execution of excavation in relatively dry conditions with an only limited decrease in the water table outside the excavation area.
In addition to these uses, soil mixing can also be implemented to craft an impervious barrier below the ground surface without any excavation, for instance, to diminish seepage through a dam or to restrict contaminated groundwater. Soil mixing also plays a significant role in the improvement of foundational soils to enhance their strength and minimize the risk of liquefaction during an earthquake.