Stone column (for ground improvement)
soletanche bachy
for ground containing silty or clayey layers,
the particles of which cannot be rearranged by vibration.
The stone columns allow the treatment of these types of ground through the incorporation of granular materials
(sometimes called ballast) compacted by ascending steps.
These columns can also have their stones concreted or
just made of mortar.
They also serve as
drains and allow an
acceleration of the
consolidation of
the surrounding
ground. In a seismic
area, they can
reduce the ground
liquefaction risk.
