Dynamic Compaction
Dynamic Compaction is a method of ground improvement developed by Menard over 50 years ago, for the treatment of loose granular soils and fills and consists of repeated high energy impacts by a high mass pounder dropped from a large crane, or purpose made frame, to transfer the energy into the ground.
A grid pattern of impact points is adopted for the treatment of an area and the system relies on the compaction effect of the energy transfer. The only requirement for materials is for the filling of the craters created in the platform surface.
Dynamic Compaction (DC) is a cost effective method of ground improvement for:
- sand densification
- soil compaction
- landfill treatment
- unconsolidated fill or soil treatment
Dynamic Replacement
Dynamic Replacement is an extension of the Dynamic Compaction method for application in soft cohesive soils and using essentially similar equipment for installation, whereby the object is to create a grid pattern of inclusions over an area of soft soils with the object of increasing the global soil modulus.
The inclusions are comprised of imported granular material that is driven into the soft soils by the pounder to form semi rigid columns in the soil mass up to 5-7m deep.
Dynamic Replacement (DR) is a cost effective method of ground improvement for:
- settlement control in shallow soft clays
- embankment stability
