R. Diederich, DuPont de Nemours (Luxembourg) S. àr. l.
A research program was performed in order to study the behaviour of woven and nonwoven geotextiles under field conditions.The project objective focused on the correlation between properties determined by the standard index tests and the actual measured damage. The research showed that most national geotextile specification and classification systems are not representative of the performance behaviour of geotextiles under real field conditions. Common criteria for all geotextiles is proposed based on the combination of deformation energy and stress-strain properties.