Being at the forefront of soil mixing contractors, Schnabel understands the imperative role proper soil mixing plays in developing sturdy earth-retention systems. The process, when effectively performed, results in a soilcrete blend that showcases enhanced strength and diminished permeability.
One possible application for soil mixing is constructing earth-retaining structures when a groundwater cutoff is also necessitated. Schnabel typically employs an approach involving the drilling of overlapping soilcrete columns, thereby creating a consistent groundwater cutoff wall.
To further strengthen the soilcrete, steel piles are generally installed whilst the mixture is fresh and wet. This reinforcement augments the strength of the treated ground, enabling it to bridge the space between the piles. The reduced permeability of a soil mixing wall facilitates excavation under relatively dry conditions, with minimal water table reduction outside the excavation scope.
Soil mixing also has other applications such as the creation of impervious barriers under the ground surface where no excavation is required, for instance, to minimize seepage through a dam or to confine contaminated groundwater. Furthermore, soil mixing proves beneficial in ameliorating foundation soils to boost their strength and decrease the risk of liquefaction during seismic activities.