Impact compaction

Dynamic soil compaction

Dynamic soil compaction

Schematic illustration of the dynamic soil compaction:
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

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.

Dynamic soil compaction with tamper weights

  • The tamper weight is dropped in free fall onto the ground to be compacted.

    Tamper weight

    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.

    Multiple compaction

    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.

    Craters

    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.

    Duty cycle crawler cranes as carrier machines

    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.

    Automated control system

    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.

    Compaction under water

    Specially designed tamper weights allow for compaction work under water. Here, the machine is used on a barge.

Video impact compaction

Dynamic soil compaction with tamper weights

Impact compaction is particularly suitable for the compaction of sandy soils for land reclamation. Play video

Dynamic soil compaction with tamper weights

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