Which of the following methods is NOT typically used for soil stabilization?

Soil stabilization aims to improve the engineering properties of soil to enhance its load-bearing capacity, reduce permeability, and increase durability. Grouting, deep mixing, and compaction are all methods specifically designed to modify the soil's characteristics for better performance under load.

Grouting involves injecting a cementitious or chemical material into the soil to fill voids, strengthen structures, or reduce permeability. This is widely used in various geotechnical applications to improve the soil's stability and strength.

Deep mixing combines soil with binding agents, typically cement or lime, to create columns of stabilized soil. This method helps improve the soil's load-bearing capacity and is particularly effective in soft or loose soils.

Compaction is the process of densifying the soil by applying mechanical force, removing air pockets, and increasing density. This method is fundamental in construction to ensure a stable foundation for structures.

Excavation, on the other hand, is the process of removing soil from a site and does not actively stabilize or strengthen the soil. While excavation is important for preparing sites, it does not enhance the soil's properties and is not a soil stabilization technique. This distinction makes it the correct choice for the method that is not typically used for soil stabilization.