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For impact compaction a heavy tamper weight is dropped from heights of up to 40 metres onto the ground to be compacted. This dynamic input of energy increases the density of the building ground. The craters created through impact compaction are refilled with suitable material and further compacted, if necessary. Duty cycle crawler cranes of the HS series carry out the compaction process efficiently and automatically with free-fall winches and crane control.
Duty cycle crawler crane
(avoids undesired unwinding of the rope)
1 Compaction crater
2 Fill (e.g. stable gravel)
3 Effective range of the compaction
4 Soil with insufficient load bearing capacity
5 Load-bearing layer
The tamper weight is dropped in free fall onto the ground to be compacted.
Impact series: several impacting blows are made on the same compaction point.
The created craters are filled with suitable material and further compacted, if required.
The robust machines of the HS series with extra-large crawlers and booms of high lifting capacity are used.
Hoisting and free fall are controlled automatically. The free-fall control avoids undesired unwinding of the rope.
Specially designed tamper weights allow for compaction work under water. Here, the machine is used on a barge.
Impact compaction is particularly suitable for the compaction of sandy soils for land reclamation.
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