Geomembrane interface friction

Negussey, Dawit; Wijewickreme, W. K. D.; Vaid, Y. P.

doi:10.1139/t89-018

Cited by 45 publications

(10 citation statements)

References 1 publication

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“…To fill this need, torsional ring shear and large-scale direct shear tests were conducted on a variety of PVC geomembrane-geosynthetic interfaces. These test results are summarized herein and complement/differ from the extensive information available on HDPE geomembranegeosynthetic and HDPE geomembrane-soil interfaces (Bove 1990;Dove and Frost 1999;Koerner et al 1986;Martin et al 1984;Mitchell et al 1990;Negussey et al 1989;O'Rourke et al 1990;Saxena and Wong 1984, Stark and Poeppel 1994, Stark et al 1996, Takasumi et al 1991, Williams and Houlihan 1987Yegian and Lahlaf 1992).…”

Section: Introductionsupporting

confidence: 65%

Shear Strength Characteristics of PVC Geomembrane-Geosynthetic Interfaces

Hillman

Stark

2001

Geosynthetics International

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Torsional ring shear and large-scale direct shear tests were conducted to investigate the shear behavior of polyvinyl chloride (PVC) geomembrane-geosynthetic interfaces. Specifically, the smooth and faille-finished sides of a 0.75 mm-thick PVC geomembrane were sheared against five different nonwoven geotextiles, a drainage composite, a geonet, and an unreinforced geosynthetic clay liner (GCL). Test results indicate that the smooth side of the PVC geomembrane yields a higher interface shear resistance than the faille-finished side due to the larger contact area and higher pliability of the smooth side. The interface shear behavior of the PVC geomembrane is compared to that of a high density polyethylene (HDPE) geomembrane and two very flexible polyethylene (VFPE) geomembranes. Faille-finished PVC geomembrane-nonwoven geotextile interfaces experience a post-peak strength loss of less than 25% at normal stresses between 100 and 400 kPa and no post-peak strength loss at normal stresses of 50 kPa and below. This behavior is attributed to the pliability of the PVC geomembrane, which enables (i) the geomembrane surface to be roughened, (ii) the other interface component to embed into the geomembrane as shearing progresses, and (iii) no texturing to be used that can damage the overlying geosynthetic. The effects of nonwoven geotextile fiber type, mass per unit area, and calendering on PVC geomembrane-nonwoven geotextile interface strength are also investigated.

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Section: Introductionsupporting

confidence: 65%

Shear Strength Characteristics of PVC Geomembrane-Geosynthetic Interfaces

Hillman

Stark

2001

Geosynthetics International

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“…This can be attributed to the suction effect between the geotextile and GM interface. The shear stress vs. horizontal displacement did not display any noticeable peak resistance (Martin et al, 1984;Saxena and Wong, 1984;Negussey et al, 1989). The residual shear stress in wet condition was slightly higher than that in the dry condition, irrespective of the normal stress and this observation is in line with Negussey et al (1989).…”

Section: Geotextile (500 G/m 2 )-Gm Interfacementioning

confidence: 81%

Evaluation of interface shear strength of composite liner system and stability analysis for a landfill lining system in Thailand

Bergado

Ramana

Sia

et al. 2006

Geotextiles and Geomembranes

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“…It is widely used for the anti-seepage engineering of various domestic and solid waste residues because of its good resistance to low temperatures and good corrosion resistance [2][3][4][5][6]. The friction of the interface between the HDPE geomembrane and the solid waste under direct shear must be well considered to assess the stability of engineering structures [7][8][9][10][11]. According to the standard for pollution control on the storage and disposal of general industrial solid waste in the Guizhou province, the yard storing of slag from class II general industrial solid waste must use anti-seepage methods [12].…”

Section: Introductionmentioning

confidence: 99%

Shear Testing of the Interfacial Friction Between an HDPE Geomembrane and Solid Waste

Zhou

Zhu

et al. 2020

Materials

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High-density polyethylene (HDPE) geomembrane is often used as an anti-seepage material in domestic and industrial solid waste landfills. To study the interfacial shear strength between the HDPE anti-seepage geomembrane and various solid wastes, we performed direct shear tests on the contact interface between nine types of industrial solid waste or soil (desulfurization gypsum, fly ash, red mud, mercury slag, lead-zinc slag, manganese slag, silica fume, clay and sand) and a geomembrane with a smooth or rough surface in Guizhou Province, China. Friction strength parameters like the interfacial friction angle and the apparent cohesion between the HDPE geomembrane and various solid wastes were measured to analyze the shear strength of the interface between a geomembrane with either a smooth or a rough surface and various solid wastes. The interfacial shear stress between the HDPE geomembrane and the industrial solid waste increased with shear displacement and the slope of the stress-displacement curve decreased gradually. When shear displacement increased to a certain range, the shear stress at the interface remained unchanged. The interfacial shear strength between the geomembrane with a rough surface and the solid waste was higher than for the geomembrane with a smooth surface. Consequentially, the interfacial friction angle for the geomembrane with a rough surface was larger. The geomembrane with a rough surface had a better shear resistance and the shear characteristics fully developed when it was in full contact with the solid waste.

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Geomembrane interface friction

Cited by 45 publications

References 1 publication

Shear Strength Characteristics of PVC Geomembrane-Geosynthetic Interfaces

Shear Strength Characteristics of PVC Geomembrane-Geosynthetic Interfaces

Evaluation of interface shear strength of composite liner system and stability analysis for a landfill lining system in Thailand

Shear Testing of the Interfacial Friction Between an HDPE Geomembrane and Solid Waste

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