ABSTRACT
Extensive direct shear, direct interface and pull-out tests of a non-woven, needle punched geo-textile in Cape Flats, Klipheuwel and Munich sand were undertaken to study the interface behaviour as a function of confining pressure. The respective responses are summarized in terms of shear stress/horizontal displacement and pull-out resistance/front displacement relationships showing the frictional performance of the geotextile in these sands of various grain characteristics. Specific emphasis and detailed analyses went into pull-out experiments in which local displacements of the specimens were measured, allowing the derivation of force/displacements and thus skin friction distributions along the geotextile.
