This article describes the shear test behaviour of flexible geomembrane/nonwoven geotextile interfaces. In addition a database of PVC, HDPE and VFPE geomembrane/nonwoven geotextile interface strengths is presented so that it can be sued for comparison purposes. It was concluded that: the interface shear strengths obtained from torsional ring shear tests are in agreement with those obtained from large scale direct shear tests for the interfaces studied; the smooth side of a PVC geomembrane provides higher peak and residual interface shear resistance that the faille side; Faille PVC geomembrane/nonwoven geotextile interfaces exhibit smaller post-peak strength losses than similar smooth and textured HDPE and VFPE geomembrane interfaces; a polyester based nonwoven geotextile yields higher peak and residual interface shear strengths when sheared against the faille PVC geomembrane surface than a polypropylene based nonwoven geotextile; Nonwoven geotextile fibre type appears to have an impact on PVC geomembrane/nonwoven geotextile interface shear strength; a nonwoven geotextile has a higher peak strength than a geotextile for the faille PVC; and calendering a nonwoven geotextile produces greater interface shear strength with the faille PVC geomembrane than a non-calendered geotextile.
|Original language||English (US)|
|Number of pages||5|
|Specialist publication||Geotechnical Fabrics Report|
|State||Published - 2000|
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Polymers and Plastics