Abstract
This paper presents the effects of the two commonly employed gripping systems in geosynthetic–geosynthetic interface shear testing using a 300 × 300 mm direct shear device, in accordance with the ASTM D 5321/D 6243 test method. Currently, gripping systems vary widely among laboratories and the preferred surface remains a topic of debate. In this study, the nail plate and sandpaper were used, and their shear stress–displacement curves obtained from the geotextile/geomembrane and geomembrane/geosynthetic clay liner interface are discussed. The results revealed that the nail plate was the most effective gripping surface for geotextile/geomembrane interface testing, whereas the sandpaper was suitable for geomembrane/geosynthetic clay liner interface testing tested at normal confining pressures of 200 kPa and higher.
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Sikwanda, C., Kalumba, D., Nolutshungu, L. (2020). An Investigation of the Effects of Specimen Gripping Systems on Shear Stress at the Geosynthetic–Geosynthetic Interface. In: Latha Gali, M., P., R.R. (eds) Geotechnical Characterization and Modelling. Lecture Notes in Civil Engineering, vol 85. Springer, Singapore. https://doi.org/10.1007/978-981-15-6086-6_33
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DOI: https://doi.org/10.1007/978-981-15-6086-6_33
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