The major function of filtration is to prevent the destabilisation of the soil by internal flows.


The geotextile filter has a dual action:

  • It holds back the skeleton of the soil allowing the formation of a granular auto-filter 
  • It lets water through 

Advantages of the use of the Filtration range

  • Economy of granular materials
  • Reduced thickness of the filter
  • Rasy and low cost implementation
  • Continuity of the filtering structure in the case of deformation of the structure (possibility of seams) 

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