#Dynamic compaction,#Common uses,#Advantages

Dynamic compaction involves the controlled impact of a crane hoisted weight, of around 10-12 tonnes, falling in a pre-determined grid pattern to improve loose, granular and mixed soils and fills.

Common uses

Increase bearing capacity

Decrease settlement

Mitigate liquefaction

Avoid major below-ground obstruction removal

Process

Dynamic compaction is a ground improvement technique that densifies soils and fill materials by using a drop weight.

Advantages

➪ Capable of compacting a wide variety of weak soils

➪ Increased bearing capacity

➪ Reduced settlement

➪ Sustainable technique using limited material import

➪ Can improve soil conditions on marginal sites to the extent that shallow foundations can be used without deep excavation or piling

➪ Removal of compressible, contaminated fills can sometimes be avoided

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