Soil stabilization is the application of chemical grouting to modify the characteristics of soil for geotechnical or structural purposes. Chemical grouting for soil stabilization is also referred to as soil modification. It is different than the use of chemical grouting for water intrusion repair. We do not perform lime-based stabilization for cohesive soils.
How Soil Stabilization Works
Chemical grout is injected into soils in place, and reacts with native or introduced water to cure into a solidified mass. A catalyst may be added to speed the reaction time. Depending on the chemical grout being used, it may expand as part of the reaction process. Non-cohesive soils are the best candidates for chemical grouting soil modification. Layers of uncontrolled sandy fills commonly found under slab floors and slab foundations that are raised above finished grade are generally excellent candidates for chemical grouting soil modification. Generally, soil stabilization is done on a grid pattern in conjunction with a shallow foundation repair method such as polyurethane grouting. This is a low-disruption alternative to deep foundation installation below slab floors.