Description:The RIC technology is the modern approach for compacting existing soils that would otherwise be exca...
Update time:2023-01-19 09:05:00
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A compaction plate is placed on the ground to be treated. A hydraulic hammer, generally weighing less than 10 to 15 tonnes, is fitted to an excavator and used to transmit compaction energy to the soil via repeated impact. Without specific site precautions, a safe working distance to sensitive structures can usually be defined on the order of 8 to 10 m, as a distance of 5 to 6 m can usually be adopted for classical structures. At that distance, noise levels are lower than 90 dBA.
The RIC technology is the modern approach for compacting existing soils that would otherwise be excavated and compacted using a conventional roller compactor in layers of 15 to 30cm.
Energy is transferred to the underlying loose granular soils rearranging the particles into a denser formation. RIC can effectively densify up to 4-5m of soils without excavation, adding water or dewatering. It can also be used for fill compaction, which can place in bulk fill materials and compact it accordingly without adding any water.
For large infrastructure developments, RIC takes the lead due to its speed of execution that makes it much more cost effective than other alternatives.
Control: the machine is accurately controlled from the excavator cab and the degree of compaction is electronically monitored,
Safety: the impact foot is in contact with the ground at all times and eliminates the risk of flying debris. Unlike conventional dynamic compaction, other activities can take place in close proximity,
Quality assurance: the impact energy and soil deflection are recorded by an on-board computer for presentation of compaction data to site managers. Results can verify work done to the client. The data can also highlight weak zones where extra fill is required, or zones where underground obstructions were present (eg. previously hidden old foundations),
Mobilisation: the RIC units are mounted on CAT 45 ton and CAT 85 ton excavators and can be mobilised within minutes of arrival on site,
Speed & cost: due to the fast ground coverage and the compaction efficiency, RIC generates a significant cost and time saving over conventional dynamic compaction methods with up to 75% cost and 100% time savings.
The Rapid Impact Compaction technology works very well for all kinds of non-cohesive soils, especially for the compaction of gravels and sands. It can also be used on reclaimed areas where anthropogenic soils and uncompacted fills occur.
Most often, the RIC technology is used for the construction of enclosed buildings: under the foundation slabs/floors of industrial and commercial halls and under heavy surfaces of warehouses, tanks; for the construction of infrastructure: all types of roads and highways, under the road and rail embankments and often as the improvement of the base for parking lots and airport runways. A great advantage of the RIC method is its mobility and relatively small size of the equipment unit which allows for carrying out the works in areas with difficult access.
Rapid Impact Compaction is a shallow ground improvement and densification technique. This method densifies shallow, granular soils, which repeatedly strike an impact plate on the ground surface using a hydraulic hammer. The energy is transferred to the underlying loose soils and regroups the particles into a denser formation. The impact locations are located on a grid pattern and the spacing of those locations is calculated by the subsurface conditions and foundation loading and geometry.
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