It is possible to use dynamic replacement in organic soils. Dynamic replacement pilars combine to caracteristic features: large diameters (2 to 2.5 metres) and low slenderness ratio. This make dynamic replacement pilars suitable for treating very loose, waterlogged and highly organic soils.
Compaction grouting is a quasi-static process with controlled pressure and injection rates. There is therefore no risk of increasing pore water pressure nor generating post-construction settlement.
As a rule, jet grouting suits poorly to soils with blocks and rough gravel, to organic materials. It is not adapted either to soils through which large volumes of water flow.
Our company systematically controls cut-off to ensure the quality of the works. Cancelling risk of damage is our goal. This is why we systematically carry out earthworks according to best practices.
Groundwater is no obstacle. We can build CMCs rigid inclusions where groundwater is present. Our teams take extra care in this situation. The design is adapted accordingly in cases where the water flow through the soil is high.
During the entire pumping operation, the Menard Vacuum™ maintains the water table at the level of the horizontal drain network. This process does not lower the water table within or around the worksite. The vacuum pumps : only the volume of water expelled by the soil during consolidation settlement the residual flow necessary to [...]
The technique is rarely used on surface areas of less than 10,000 m².
Menard Vacuum™ can substantially reduce consolidation time. Early pre-loading implemented as soon as the system is in place makes it possible. This goes without risk of ground failure. How so? The vacuum generates an “artificial beam” between the horizontal drains and the membrane. The isotropic nature of the Menard Vacuum™ load combined with the [...]
The main purpose of drains is to provide pore water with an escape path when the soil is subject to stressing due to preloading fill. Consolidation settlement takes place when pore water is removed from saturated soils. It is thus, as a rule, not necessary to install vertical drains if there is no water [...]
The answer is clearly YES. But the real question is whether it is useful to drain soils that already has good drainage characteristics.