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is often necessary to densify loose granular soils to achieve acceptable
foundation performance of structures, particularly in areas of seismic activity
where it is necessary to reduce soil liquefaction and seismic deformation
potential. Compaction in granular soils is achieved by vibration, typically
either by insertion of a large vibrating poker into the ground (vibro-compaction)
or by frequent drops of a large mass from a great height (deep dynamic
compaction). Increases in building code design accelerations for structures in
potential seismic areas and the resulting increase in the requirement for
densification has led to investigation of the potential for use of explosive
compaction (EC) as an economic alternative to the more traditional techniques. |
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