Purposes of foundation soil improvement

The purposes of foundation soil improvement are:

1. To increase the bearing capacity and shear strength of weak soil.
2. To reduce total and differential settlement of structures.
3. To reduce permeability and control seepage.
4. To control the swelling and shrinkage of expansive soils.
5. To reduce liquefaction potential of loose saturated sands during earthquakes.
6. To improve slope stability and reduce lateral earth pressure.
7. To make the site suitable for shallow foundations, avoiding costly deep foundations.