Densification; Soil stabilization
Compaction or densification is reduction in the volume of voids in a soil mass caused by rearrangement of soil particles by mechanical means.
Compaction is used as a method of stabilizing soils, that is, improving their properties. Compaction is required when soils are used as a construction material in applications such as structural fill, highway and railroad embankments, earth dams and levees, cover and liner material for sanitary landfills, foundation material, and reclamation of mine waste embankments.
Compaction improves almost all desirable properties of soils. It reduces detrimental settlements, increases soil strength and improves its stability, improves bearing capacity, reduces permeability, and reduces volume changes due to frost action, shrinking, and swelling.
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