EN 13719 - DETERMINATION OF THE LONG TERM PROTECTION EFFICIENCY OF GEOTEXTILES IN CONTACT WITH GEOSYNTHETIC BARRIERS


The standard describes a test used for the determination of the long term efficiency of a geotextile in protecting a geosynthetic barrier exposed to mechanical damage under static loads.
The test device used is a cylinder like in the drawing here below. The sample of geotextile is placed on a rigid surface and it is in direct contact with a metal disc, usually made up of lead.
The aggregates placed over the geotextile, consisting in standard steel spheres of 20 mm diameter, or made up of site stone material, are pressed against the metal disc by a determined force applied for a standard time. At a lower indentation measurement corresponds a better protection efficiency of the geotextile.

At the end of test the depressions caused by pressure from aggregates are observed measuring the 3 most relevant deformations in two orthogonal directions, and is calculated the mean value of 6 results of deformation. The mean value of deformation in percentage calculated upon pressure of 300, 600 and 1200 kPa, gives the value of protection efficiency of the geotextile.


  1. load applied
  2. cylinder
  3. separator
  4. simulated inert material
  5. specimen of geotextile
  6. iron plate
  7. loading cell
  8. steel plates
  9. rubber pad
  10. sand