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Resonant compaction
Vibration compaction (vibro-compaction, vibratory compaction or compaction by resonance) is done by the insertion of an optimized steel profile, a so-called vibratory probe. The effect of resonance in the soil layers increases the effect of densification by vibration, inducing a transient state of localized liquefaction of the soil around the probe, allowing for a decrease in soil volume (rearrangement of the soil particles into a denser configuration by decrease in void ratio) and improving the mechanical characteristics of the soil.
Construction sequence
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Fields of application
• Settlement reduction
• Treatment and use of non-cohesive granular soils (sands)
• Soil compaction of large construction areas
• In water-saturated sandy layers the silt and clay fractions should be relatively small according to the empirical Mitchell curves.
• In unsaturated, non-cohesive soils, the distances between the grid points of the design mesh should be smaller than in the saturated soils.
Environmental impact
• Vibrations
• No removal of soil
• Limited noise pollution
• Compaction of the surface layer
• Raising of the surface level (elevation).