Vibro Compaction
Advantages of Vibro Compaction include: • Confined liquefaction, which enables the different soil layers to be treated in an adapted and optimised manner. • Enables very high compaction depths to be achieved. • Effective anti-liquefaction treatment. • In some cases, Vibro Compaction can replace Dynamic Compaction.
Technical Data: • Maximum Depth Treatment: 50 m
Vibro Compaction (or vibroflotation) is used to densify loose soil or fill to the desired depth.
Implementation Penetration
Extraction The vibrating probe is then gradually lifted in successive passes, generating a column of compacted ground from 2 to 4.5 m in diameter, depending on the type of soil and the energy deployed by the type of probe used. Applications Ports, airports, residential, logistics platform/industrial buildings, dykes, dams.
The Vibro Compaction process involves locally liquefying the soil by penetrating it inside with a vibrating probe and the addition of water. This rearranges the grains into a denser state by reducing voids. This solution increases the overall compactness of the soil mass. The benefits of this technique are manifold: • Reduction of settlements • Anti-liquefaction treatment • Stabilisation of hydraulic embankments • Limitation of active earth pressure acting on a quay, etc.
Vibrocompaction is carried out using a vibrating probe mounted on a drilling rig, crane or excavator. Under the effect of its own weight, any machine’s pull-down force, water injection through jets and sustained horizontal vibrations, the probe is down to the required depth. The water jets at the tip of the probe are then stopped. Rearrangement The supply of water continues from the top of the vibrating probe, creating a slump cone that facilitates the rearrangement of soil particles. The water flow along the vibrator helps transport materials from the surface down to the compaction zone at the vibrating probe base.
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