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'Vibro Concrete Columns'

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Vibro Concrete Columns Project Datasheet

Canterbury, UK

Vibro Concrete Columns Project Datasheet

Manchester, UK

Vibro Concrete Columns
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Vibro Concrete Columns (VCC) are formed by the vibroflot penetrating the soil under its own mass, vibration and air flush to design depth. Concrete is then introduced at the tip of the flot via a tube attached to the concrete pump. The flot is lifted slightly then re-inserted whilst still pumping concrete, to form an enlarged toe at the base of the column and also densify granular soils at the VCC base. The flot is then carefully removed using on-board instrumentation to ensure that the tip is not lifted above the concrete level.

Columns are usually 400mm diameter with a 600mm diameter base, enlarged heads of up to 900mm can be formed and float finished to ą25mm with the aid of laser levelling. VCC's can support fully suspended slabs or ground bearing slabs in conjunction with geogrid reinforced granular mattresses or load transfer platforms.

Why use Vibro Concrete Columns?

	on contaminated piling sites where spoil removal is to be avoided

	where peats and organic soils preclude conventional vibro techniques

	where founding at a high level is required to avoid piling into an aquifer

	where short construction programmes dictate fast-track piling

	load/settlement control with a load transfer platform