Vibro stone columns can be used across all sectors from residential, commercial, industrial and infrastructure sectors.
Vibro stone columns are suitable for the improvement of both weak natural soils and made ground and can be a preferred solution for contaminated ground as it produces zero spoil. This solution is often used to improve spoil capability to carry a load, limit settlement and increase the rate of consolidation.
Vibro stone columns are installed by displacing and densifying the soil using the vibrating steel poker, or vibroflot mounted on a specialist vibro piling rig. The poker is then penetrated into ground to design depth to create a void. The poker is withdrawn, and charges of graded stone aggregate are tipped into the bore hole to form columns, this is known as the top feed method. The poker is re-inserted to compact the stone into the surrounding soils.
Bottom feed system is used where the stability of the bore is likely to collapse when the vibro poker Is withdrawn. This method is often used on weaker soils.
Similar to top feed but aggregate is introduced into the bottom of the bore hole from the surface, through the hollow poker.
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