BASICS
Basic physical conditions required to compact soil.
VIBROCOMPACTION METHOD
Method in which the vibroflot penetrates the soil using vibration, tool weight and commonly with the addition of an air, water, or a combination mixture. In this method, the local material is densified in the lower area of the vibroflot. The vibroflot is raised by pre-determined increments compacting each layer. As material is consumed a crater is formed at the surface that is either backfilled or levelled.
WET TOP FEED STONE COLUMN METHOD
Method in which the vibroflot penetrates the soil with vibration, tool weight and with the addition of an air, water, or combination mixture. In this method, the penetration unit is raised and reinserted into the ground as fast as possible displacing the water in the void previously created increasing the void diameter. Gravel is added from the surface descending alongside the penetration unit to the lower area of the vibroflot where it is locally compacted.
DRY BOTTOM FEED STONE COLUMN METHOD
Method in which the vibroflot penetrates the soil with vibration, tool weight and with the addition of air. Dry gravel is added via a silo tube and material tube to the bottom of the vibroflot. The penetration unit is lifted and lowered while gravel is injected and compacted in steps from the bottom upwards to the desired level.
