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Vibro-replacement is used to improve cohesive soil types. Thereby, coarse extraneous material is filled into the vibrating hopper and a load-bearing gravel or crushed stone column is produced. If the crushed stone columns are arranged in a grid the building ground can be improved area-wide.
Vibro-Assistant
The video shows an LB 24 rotary drilling rig in operation with a deep vibrator mounted on the leader.