Versatility of the RIC equipment is such that we envision numerous applications. Essentially designed for compaction of granular soils, benefits have also been noted in random fills and mine wastes. Compaction of fills and loose natural deposits is the typical objective; however, the RIC equipment can also serve as a diagnostic tool, identifying zones that do not respond well to dynamic compaction. Such areas may include high-plasticity soils, buried tires (or other uncompressible debris), or a host of other unexpected "surprises". Identification of these zones allows the engineer to accurately localize areas for removal and recompaction, and can provide superior economy on sites where the only apparent solution is to replace all fills because investigations have indicated the presence of some undesirable soils.
Assessment of compaction achieved in random fills is typically more difficult to test (and hence quantify), the visual aspect of settlement of the surface supports the fact that ground improvement is being achieved. As use of the equipment expands, so will the data base of test information.
The following provides a brief list of potential and current applications:
- Compaction of loose granular soils to improve bearing capacity and reduce settlement.
- Mitigation of soil liquefaction potential.
- Densification of bulk fills (i.e. lifts of about 12 feet), eliminating the need for small lifts and possible use of compaction equipment within confined excavations.
- Compaction of foreshore fills, where granular material has been placed both above and below water table.
- Foundation compaction below footings and bearing walls.
- Densification of bridge end-fills and highway subgrades.
- Backfilling excavations at remediation sites, particularly where excavations extend below the water table, and groundwater pumping is not desirable due to pre-disposal treatment requirements.
- Compaction of loose native granular soils to limit the potential for liquefaction during seismic events.
- Use in association with deep compaction technologies such as vibro-flotation or stone columns to eliminate the need for confining fills, or excessive stone takes often required to meet the compaction requirements in the upper 12 to 15 feet.
- Use in association with conventional Dynamic Compaction or blast densification to improve the compaction achieved in the upper zone.