Advanced Geotechnical Solutions with Jet Grouting
Industry-Leading Groundwater Control & Foundation Support.
As one of America’s top design-build contractors, Schnabel delivers exceptional jet grouting solutions that help clients overcome complex site challenges and achieve their construction goals.
Whether you need to reduce groundwater seepage, strengthen weak soils, underpin existing structures, or provide excavation support, our decades of expertise ensure your project is delivered safely, efficiently, and with lasting results.
How Jet Grouting Works
Jet grouting is a procedure for mixing soil with injected cement grout in-situ (on site) to create a cement-stabilized soil column. With proper quality control, the stabilized soil exhibits increased strength and decreased permeability. These modified properties allow the stabilized soil to be used as an engineered product for foundation support and groundwater control. Underpinning of existing structures and cutoff walls for excavation support are two typical applications.
Jet grouting involves the drilling or jetting of a small-diameter pipe, typically around 4 inches in diameter, to the bottom of the desired treatment depth. Once that depth is reached, contractors inject a neat cement grout under high pressure, typically around 6,000 psi, through ports at the bottom end of the drill pipe as the pipe is rotated and withdrawn to create a circular column of treated soil. The rate of withdrawal can be varied to increase or decrease the diameter of the jet grout columns. These columns are located as required for vertical support or overlapped to create a wall or barrier to the horizontal movement of weak soil and groundwater.
Jet grouting is particularly effective when the subsurface to be treated contains existing utilities or other buried obstructions, since the small-diameter pipe can fit between them and create a larger diameter column in the soil below.
Our Services Include:
Groundwater Control
Creates impermeable barriers to stop water from seeping into underground structures, ensuring dry and stable conditions.
Jet Grouting for Soil Stabilization
Improves weak soils by creating a cement-stabilized soil column to provide a stronger foundation for construction.
Underpinning Existing Structures
Provides additional foundation support by stabilizing soil beneath existing buildings or infrastructure.
Cut-Off Walls for Excavation Support
Prevents soil movement and groundwater intrusion during excavation for underground projects.
Need Expert Geotechnical Solutions for Your Jet Grouting Project? Let’s Talk.
Why Schnabel?
Here’s Why You Should Partner with Schnabel:
Get in touch with Schnabel today to learn how our jet grouting solutions can support your next project.
Real-World Results in Jet Grouting
Projects Schnabel Has Worked On
Here are some projects where Schnabel used jet grouting to address complex geotechnical challenges:
Lower Olentangy Tunnel Project
Location:
Columbus, OH
Client:
Granite Construction
Background
The project required jet grouting along a 3.2-mile tunnel to support tunneling operations.
Schnabel’s Solution
Jet grouting was performed at four tunnel shafts for TBM (Tunnel Boring Machine) break-in and break-out, twelve Safe Haven sites for cutterhead replacement, and five locations where a water main crossed the TBM alignment.
Results
Completed ahead of schedule despite multiple project challenges.
J Avenue Water Treatment Plant
Location:
Cedar Rapid, IA
Client:
Miron Construction
Background
The City of Cedar Rapids expanded the J Avenue Water Treatment Plant, which required excavation adjacent to an existing structure.
Schnabel’s Solution
Schnabel installed 67 jet grout columns to form a continuous wall, providing both soil and groundwater retention during construction.
Results
The continuous wall of jet grout columns was successful in retaining the soil and water behind the wall and no measurable settlement of the tank structure occurred.