“If you do a cost benefit analysis between the RIC and the conventional remove and replace material to build up areas, RIC is twice as fast and at least 40% cheaper than conventional methods.”
Braam Compion
RIC South Africa
RIC Models
RIC is a technique allied to Dynamic Compaction that can be used to increase the bearing capacity of soils through controlled Impact.
RIC units can be supplied with drop-weights of 5, 7, 9, 12 and 16 tonnes. Depending on the size of excavator used, the soil type and moisture content. The treatment is effective in the top layers typically up to 6m depth, though improvements up to 10m have been seen in some conditions. The drop-weight is dropped onto a special foot assembly 40-60 times a minute. The foot remains in contact with the ground at all times making RIC a safe controlled compaction technique.
The Benefits of RIC
CONTROL: The machine is accurately controlled from the excavator cab and the degree of compaction electronically monitored.
SAFETY: The impact foot is in contact with the ground at all times and eliminates the risk of flying debris. Unlike conventional DC; other activities can take place in close proximity.
QUALITY ASSURANCE: The impact energy and soil deflection are re-corded by the onboard computer for presentation of compaction data to site managers. Results can verify work done to the client. The data can highlight weak zones where extra fill is required, or zones where underground obstructions were present (i.e. previously hidden old foundations).
SPEED: The unit is mounted on standard excavators with the additional work-tool circuit and can be mobilised in minutes after arriving on site.
COST EFFECTIVENESS: Fast mobilisation - and without the need for secondary lift cranes, mean even small areas can be tackled economically. Typically a quarter of the cost of other excavation and replacement techniques.