12 ton rapid impact compactor for sale - HENGDA RIC

The Rapid Impact Compaction (RIC) unit is mounted on a standard excavator (of suitable size to the RIC weight) which acts as the base unit and provides hydraulic power to the hammer.

The RIC machine consists mainly of three components: a crawler hydraulic excavator base with a strengthened arm to which a compaction hammer is attached. A weight within the hammer generates compression by the repeated drop onto a compaction foot that remains in contact with the ground.

Rapid Impact Compaction is a technique used to increase the bearing capacity of soils through controlled impact. Dependent on ground conditions, the surface compaction can typically penetrate to 6 metres in depth to potentially 10 metres in some situations.

RIC can be used to improve bearing capacity and reduce liquefaction potential of loose soils. The compaction sequence is designed to work from the outside in, so that compaction of the lower zone soils occurs first followed by compaction of the upper zone. Data monitoring during the compaction process and the online display in the operator’s cab enables compaction control, an economic application of the compaction tool, and a work integrated quality control. The total impact depth of the impact foot, the number of blows, and the final settlement of the impact foot after a blow define the stopping criteria. 

Rapid Impact Compaction (RIC) is an innovative dynamic compaction device mainly used to compact sandy soils, where silt and clay contents are low. RIC closes the gap between the surface compaction methods (e.g. roller compaction) and the deep compaction methods (e.g. deep dynamic compaction) and permitting a middle-deep improvement of the ground. RIC has been used to treat a range of fills of a generally granular nature and some natural sandy and silty soils 

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.