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Micropiles

Expertise

Micropiles

Micropiles are used to lay foundations for new structures or to reinforce existing structures on cramped sites.


After air, wet or fluid drilling, the micropiles are reinforced and grouted. The type of micropiles depends on the grouting technique:
- with sealing grout gravity filling: type-II micropiles
- with overall and individual grouting: type-III micropiles
with repetitive and selective grouting: type-IV micropiles

This foundation method consists of transferring loads from the structure to the ground, via a low-diameter bored pile (<250mm) most often equipped with a metal reinforcement (HA bar, pipe, etc.).


Micropiles can be set up to work with either compression, tension, or both.

Use of micropiles:

  • Foundations for new structures
  • Reinforcement of structures: bridge abutments, banks, road embankments

  • Anchorage of uplifted raft foundations
  • ​​​​​​​Anchorage of electrical, radio, or telephone transmission towers
  • ​​​​​​​Reinforcement of existing foundations or underpinning of buildings

Micropiles

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