Vibro-compaction (for ground improvement)
soletanche bachy
is applied essentially to granular and not coherent soils,
such as sands and gravels.
The vibrations induce a temporary liquefaction of the
soil around the vibrator. In this case, the intergranular
strengths are almost cancelled, and the grains are
rearranged in a more compact pattern offering better
characteristics.
This technique is often used on large works for the
densification of hydraulic fills for reclamation.
