WHAT IS VIBROFLOTATION?
It is a Specialist Deep Foundation Technique used for Ground improvement to considerable depth, up to 75 meters. It uses a probe called Vibro-flot (which could be powered electrically or hydraulically) to strengthen the soil by deep compaction to make the soil suitable to support proposed imposed load.
It involves the introduction of backfill granular material (Sand or Granite) to form Stone columns interlocking with surrounding soil. Treatment is to provide adequate bearing capacity; restrict total and differential settlements to acceptable magnitudes under the proposed loading and provide acceptable long-term performance of the treated ground.