Compaction Grouting
Chemical grouting is a form of Permeation Grouting that specifically uses low viscosity, non-particulate chemical solutions to fill voids in soils where particulate-based grouts (such as cement-based) are not as effective. It typically involves the use of polyurethane, sodium silicate, acrylate, or other chemical solutions that react and harden within the soil.
Chemical grouting is best suited for fine-grained sands with low fines content where extremely low viscosity materials are needed to effectively permeate into smaller soil void spaces. It is commonly used for stabilizing soils below foundations or reducing permeability for groundwater control and results in a less permeable, stronger, and more uniform soil mass.
