About Micropiles
What is a micropile ?
Micropiles are bored piles with a diameter of less than 300mm.
Micropiles can bear both compressive and tensile loads and also be used on steep gradients (> 20° from the vertical).
The micropile is supported by a steel bar, a steel tube or an H beam, which is:
◎ either sealed to the ground using a cement grout, mortar or using micro-concrete for bored micropiles.
◎ or in direct contact with the ground for displacement micropiles.
What are the applications of a micropile ?
Micropiles are generally used for repairs to existing foundations and for reinforcing foundations of existing structures. Micropile driving and/or boring machines are light and compact, allowing work to be carried out within the existing structure.
Micropiles can also be used to carry out new construction work and retaining structures such as micro-Berlin-type wall.
What are the advantages of this technique ?
1.Applicable to foundation works, from transmission of tensile loads to angled boreholes, repairs, reinforcements or even retaining works
2.Adapts to site constraints: limited height, work from a platform, near existing structures and structures in use, etc.
3.Adapts to constraints linked to the nature of the ground: stability, drillability, hardness, granulometry, etc.
BACK 
