Strengthening Soil for Lasting Stability
Advanced In-Situ Soil-Cement Mixing for Stronger, More Impermeable Ground.
As one of the nation’s premier design-build Geostructural Design & Construction contractors, Schnabel delivers advanced soil mixing solutions that improve soil strength, reduce permeability, and create durable earth-retention systems.
Whatever the environment, whatever your operational challenges—Schnabel has the expertise to provide the right soil mixing solution for your project.
How Soil Mixing Works
Proper soil mixing is an essential step in creating durable earth-retention solutions. When done correctly, the mixing process yields a soil-cement mixture that has both increased strength and reduced permeability.
One application for soil mixing is in the construction of earth-retaining structures where a groundwater cut-off is also required. Schnabel typically drills a series of overlapping soil-cement columns to create a continuous groundwater cutoff wall.
Steel piles are typically placed in the soil-cement while it is still wet to improve its strength. The increased strength of the treated ground allows it to span between the piles. The reduced permeability of a soil mix wall allows the excavation to take place under relatively dry conditions with limited draw down of the water table outside the excavation.
Soil mixing can also be used to create an impermeable barrier below the ground surface where no excavation takes place, such as to reduce seepage through a dam or to contain contaminated groundwater. Another use for soil mixing is the improvement of foundation soils to increase their strength and reduce the likelihood of liquefaction during an earthquake.
Our Services Include:

Groundwater Cut-Off Walls
Continuous soil-cement columns that control water infiltration during excavation.

Strength Enhancement
Improved bearing capacity for deep foundations and reduced settlement risks.

Environmental Containment
Subsurface barriers that prevent seepage through dams or stop the spread of contaminants.

Seismic Resilience
Stabilizing soils to reduce liquefaction risk during earthquakes.
Why Schnabel?
Schnabel is one of the nation’s premier soil mixing contractors, with decades of proven experience in challenging environments. Our design-build approach ensures every solution is optimized for strength, safety, and performance.
Here’s Why Clients Trust Us:
Let Schnabel take your project to the next level with our innovative soil mixing solutions.
Real-World Results in Soil Mixing
Projects Schnabel Has Worked On
Here are some projects where Schnabel’s soil mixing solutions played a key role:
Centro West Block
Location:
Austin, TX
Client:
Harvey Cleary Builders
Background
Schnabel was contracted to design and construct a shoring system essential for building an underground parking garage. The sandy soil conditions created a need for enhanced ground stability during excavation.
Schnabel’s Solution
Schnabel implemented a system that incorporated soil mixing between soldier beams, which effectively improved ground stability and prevented cave-ins throughout the excavation process.
Results
The shoring system provided reliable excavation support, enabling safe and efficient construction of the underground garage.
Waldo’s Old Fourth Ward
Location:
City, State
Client:
Shell McElroy
Background
Schnabel was contracted to design and install a temporary soil-mixed cut-off wall system for the Waldo’s Old Fourth Ward project.
Schnabel’s Solution
The soil-mixed wall was constructed around the entire perimeter of the site, extending approximately 1,100 feet in length with an exposed height ranging from 20 to 32 feet.
Results
The system successfully provided excavation support, facilitating the construction of a mixed-use development in the Old Fourth Ward neighborhood.
Ready for a stronger, more stable foundation?
Partner with Schnabel for soil mixing solutions engineered for performance and reliability.
