Jet Grouting

While jet grouting produces similar results to soil mixing, it is done by using ultra high pressure ( 6,000 psi), and injection of cement slurry to cut and mix the soil, resulting in columns of thoroughly mixed cemented soil. Slurry is fed through the drill pipe and forced out laterally through small ports in the pipe. Air jets can also be employed to increase mixing energy. Jet grouting columns are typically formed from the bottom up. As the drill pipe is continually rotated, it forms a nearly cylindrical column of fully mixed soil.

Jet grouting differs from DSM or SSM in that the equipment can be used for treatment of a limited vertical zone and in areas with difficult surface access. Jet grouting columns are frequently used in concert with slurry walls and DSM to encase critical underground utilities. Jet grouting is particularly adaptable in forming blocks of treated grout to specific shapes for underpinning and foundation Rehabilitation of important structures. Geo-Con possesses the capability to perform single, double and triple phase jet grouting.

Jet grouting can also be performed without rotation of the drill pipe. This results in the formation of a thin barrier wall (6" to 12" thick) which can be utilized for the cut-off of water in areas that cannot accommodate thicker walls.

Prior Projects:

• Beacon Lake Dam - Bluff Dale, Texas

• Mitigation of MSE Wall Deformation - Sunflower, Arizona

• Talbert Barrier - Fountain Valley, California

• Jet Grouting for Excavation Support - Baltimore, Maryland