As a top-tier soil mixing contractor, Schnabel underscores the significance of precise soil mixing as a cornerstone in developing solid earth-retention mechanisms. When efficiently performed, this process produces a potent soilcrete mixture with prominent increased strength and decreased permeability.
The deep mixing method, one form of soil mixing, is prevalently used in the construction of earth-retaining structures, particularly when a cut-off for groundwater is necessitated. The typical approach for Schnabel involves drilling a network of overlapping soilcrete columns, forming a perennial groundwater cutoff wall in the process.
The improvement of the mixture’s solidity typically involves the placement of steel piles in the wet soilcrete. The subsequent strength enhancement of the processed ground supports it spanning between the piles. The decrease in permeability of a soil mix wall facilitates the execution of excavation under comparatively arid conditions with limited impact on the water table beyond the excavation site.
The deep mixing method’s application isn’t limited to these instances. It can also be employed to establish an impermeable barrier beneath the ground surface without any excavation, such as mitigating seepage in a dam or restricting contaminated groundwater. A further use of this method includes enhancing foundational soils to bolster their strength and diminish the probability of liquefaction during seismic events.