Dynamic compaction


Dynamic Compaction (DC) is a a Ground Modification techniquee whereby loose soils can be effectively and economically densified to improve its mechanical characteristics and allow construction of structures directly on compacted soil, without need of deep foundations or soil replacement.

The method involves dropping heavy steel pounders repeatedly on the ground at regularly spaced intervals. The weight and height of pounding depends on the degree of compaction desired. The usual range of pounder weight is between 12 Ton to 25 Ton and the drop height can be up to 25m.

Dynamic Compaction (DC) method is applicable for a wide variety of soil conditions including saturated/unsaturated loose Sands, even with the presence of silty pockets, dune sands, inorganic fill, reclaimed soils with variable characteristics and sizes even with the presence of large sized boulders, landfill deposits and collapsible soils.

Dynamic Compaction (DC) has been extensively used to compact loose soils to depths of up to 10m, in order to increase the bearing capacity, decrease post construction settlement and mitigate liquefaction risk in case of seismic events.





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