Condition, after 20 years, of a geotextile used for the stabilisation of a spoil heap

Abstract

The measurements of the tensile strength, break strain and transmissivity presented were made on a sample of a geotextile used in the making of dikes at the foot of a spoil heap. The values obtained, compared to those measured on a control sample found on the site, evidence that the exhumed geotextile, after 20 years in an environment with highly acidic flows, has not suffered from any noticeable deterioration and that it is still capable of serving its purpose in reinforcement and drainage.