PRESSURE GROUTING

FOR

SOIL STABILIZATION

 

The art of pressure grouting is probably most commonly used for stabilizing and strengthening soils that do not have the bearing capacity to support the structures resting on them.

This process can be performed using low pressure grouting (permeation grouting) a process consisting of injecting a micro-fine, non aggregate, fluid mixture of cement and water into the soil under relatively low pressures (0 - 50 psi). This type of pressure grouting is used for stabilization of un-compacted fill zones and consolidation of debris pits.

Compaction grouting, a process consisting of injecting a low-slump (stiff), sandy grout mixture into the soil under much higher pressures (50 - 300 psi). Compaction grouting is most commonly used for stabilization of "limestone sinkholes" and deep zones (20'+) of soft soils.

 

Chemical grouting is a process performed much like low pressure grouting, usually in sandy soil conditions, or soils with a high water table. Special chemical grouts are sometimes the only products to successfully perform stabilization.

Extreme Technology's, Inc. has virtually a lifetime of experience in performing these soil stabilization techniques