Foam grouting is a method of soil stabilization that involves injecting a foam grout into the ground to improve the soil’s physical properties. The foam grout is a mixture of water, cement, and a foaming agent. The foam grout is injected into the ground and then allowed to expand and fill the voids in the soil, creating a more compact and stable base for construction. The foam grout also helps to reduce the permeability of the soil, making it less susceptible to erosion and compaction.
Foam grouting is also used to seal box culverts by filling any voids or joints between the box culvert and the surrounding soil. The foam grout is injected into the joint or void and expands to fill any gaps, creating a watertight seal. Foam grouting is also used to stabilize the soil around the box culvert, helping to prevent settlement or movement of the culvert.