Slurry grouting also known as cement grouting or high mobility grouting is the process of filling voids in soil with a flowable particulate grout. It is important to employ the correct consistency of the slurry so that the particulate fills the void and creates a strong stable bond with the soil. Generally, cement such as Portland or microfine are injected under pressure strategically throughout the affected area.
Slurry grouting is often the preferred method to use in underpinning applications because it is more economical than removal of the pilings or other affected material. It is also space friendly in that slurry grouting can be a great solution in tight spaces. It also is a great option for existing foundation repair and less intrusive than other foundation repair methods.