What is high energy impact compaction?

The RIC attachment currently being manufactured by Hangshen is mountable on a regular hydraulic crawler excavator in the 30t to 65t operating weight category. During controlled impact the RIC’s 1.5m diameter foot stays in contact with the ground, ensuring efficient impact energy transfer to the ground at all times. Energy is imparted by dropping the weight through a relatively small height of up to 1.2m at a rate of between 30 to 80 blows per minute.

SPEED - The unit is mounted on standard excavators, typically in the 40-90 tonne class and can be mobilised in minutes from arrival on site.

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 - The impact energy and soil deflection are recorded by the on-board computer for presentation of compaction data to site managers. The data can highlight weak zones where extra fill is required or zones where underground obstructions were present (i.e. previously hidden old foundations).

The compaction sequence is designed to work from the outside in; so that compaction energy can affect the soils at the deepest depths first …points designated 1… followed by compaction of soil in between in the upper zone …points 2 and 3. In this way the compaction energy is used efficiently to reach the deepest depths possible.