Deep Soil Mixing Contractors

As a standout company specializing in Geostructural Design and Construction, Schnabel is established as one of the top-ranking deep soil mixing contractors in the country.

The technique of soil mixing involves blending cement grout with soil on-site to bolster the soil’s integrity and limit its permeability. Deep soil mixing contractors like us employ this process to fabricate impermeable earth-retaining structures and secure groundwater barriers, concurrently enhancing the load-bearing capabilities of the soil.

No matter your project environment or specific operational difficulties, Schnabel’s expert deep soil mixing contractors bring the technical know-how to deliver the best soil mixing resolution tailored to your distinctive requirements.

Deep Soil Mixing Solutions

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.

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soil mixing services

Boston Museum of Fine Arts

Schnabel constructed a cement deep soil mixed (CDSM) wall for the excavation support system at the Boston Museum of Fine Arts in Massachusetts.

soil mixing contractors

Patriots Plaza

Schnabel used several techniques such as deep soil mixing, pressure grouting, and secant piles to provide both excavation support and to impede groundwater flow into the excavation at the Patriots Plaza project in Washington D.C.

Schnabel designed and installed a soil mix wall to support an excavation that was within three feet of the historic Boston Museum of Fine Arts. The low vibrations during installation and increased stiffness of a soil mix wall helped protect the priceless artifacts in the museum. Schnabel worked closely with our client John Moriarty & Associates to ensure project success.

Harry W. Schnabel, P.E., , Boston Museum of Fine Arts Project


Schnabel is the sector’s most operationally efficient Geostructural Design & Construction contractor. We optimize efficiencies by leveraging decades of experience and design/build expertise to innovate processes and approaches that are consistently proven to deliver optimal outcomes for our clients.