Frictional behaviour of three critical geosynthetic interfaces

Bacas, Belén M.; Cañizal, Jorge; Konietzky, Heinz

doi:10.1680/jgein.15.00017

Cited by 25 publications

(4 citation statements)

References 35 publications

(74 reference statements)

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“…The conventional direct shear test is a popular test to determine the mechanical behavior of interfaces and estimate fundamental parameters such as friction angle (Vangla and Gali, 2016;Bacas et al, 2015;Rouse et al, 2008;Bergado et al, 2006).…”

Section: Design Of Test Setupmentioning

confidence: 99%

Evaluating the Effect of Soil Particle Characterization on Internal Friction Angle

Rasti¹,

Adarmanabadi²,

Pineda³

et al. 2021

American Journal of Engineering and Applied Sciences

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One of the critical design parameters used in evaluating soil structure is the friction angle, derived from Mohr's Circle failure criterion. The soil friction angle is an engineering parameter estimated in the laboratory to quantify the soil shear strength in geotechnical applications. This paper indicates an experimental study investigating the impact of particle size on different sandy soils shear strength behavior. The direct shear test equipment is useful for simulating various stress regimes to determine the soil strength by employing a slow moving lateral force to a consolidated sample along a shear plane. A series of direct shear tests were conducted to investigate the interface behavior of soil. Soil samples were selected from different locations in New Mexico, United States. The influence of soil particle size on the soil's shear strength behavior is discussed by performing a series of symmetric direct shear tests according to ASTM D3080 and analyzing the results. To minimize errors, electronic transducers were used to measure vertical and horizontal displacements. DS7 is geotechnical testing software controlling the test by utilizing a data logger. The investigation indicates that the maximum vertical deformation for all different kinds of sandy soils accrued simultaneously. It was concluded that a soil's friction angle is affected by coarse-grained material. Accordingly, sandy soils with bigger particle size record a higher friction angle than soils containing small particles. Furthermore, a non-linear regression analysis was performed to determine the direct relationship between soil's friction angle and soil particle characteristics.

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Section: Design Of Test Setupmentioning

confidence: 99%

Evaluating the Effect of Soil Particle Characterization on Internal Friction Angle

Rasti¹,

Adarmanabadi²,

Pineda³

et al. 2021

American Journal of Engineering and Applied Sciences

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“…Currently, the research on the interface characteristics of reinforced soil is mainly based on direct shear tests and pull-out tests. B. M. Bacas et al [5] conducted large direct shear tests to investigate the frictional characteristics of three critical interfaces: geogrid-soil, geosynthetic membrane-soil, and geosynthetic membrane-geogrid. The results revealed that frictional behavior is the primary factor influencing the behavior of these interfaces.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Interface Characteristics of Reinforced Crushed Rock Cushion Layer Based on Direct Shear Tests

Wang,

Zhu,

Jia

et al. 2023

Materials

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Through indoor large-scale direct shear tests, the interface characteristics of the crushed rock cushions layer reinforced with ParaLink geogrid were studied. The test results indicate that the shear strength of the crushed rock aggregate and the interface strength parameters have a non-linear relationship with the normal stress. The addition of the geogrid reduces the shear strength of the crushed rock aggregate and the interface strength parameters, which is mainly due to the relatively large size, small thickness, and high smoothness of the geogrid. The reinforced geogrid has a significant impact on the deformation and fragmentation characteristics of the crushed rock aggregate. It effectively suppresses the shear contraction and shear dilation effects of the crushed rock aggregate, reducing its peak compression and peak dilation angle. Furthermore, it inhibits the tendency of particle fragmentation in the crushed rock aggregate.

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“…Landfills are an important structure in our modern society and are designed to allow maximum accumulation of wastes in the least space and prevent environmental contamination [1]. Landfills usually consist of lining system either as a base liner and/or capping system.…”

Section: Introductionmentioning

confidence: 99%

Asperities effect on polypropylene & polyester geotextile-geomembrane interface shear behaviour

Adeleke

Kalumba

Oriokot³

2019

E3S Web Conf.

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The summary of this paper is focused on the result of a study that used quantitative measures of surface texture as the basis for examining the effects of asperities on the shear characteristics of geotextile-geomembrane interfaces. About 30 large direct shear tests were conducted to evaluate the geotextile-geomembrane interface shear strength properties. The results indicated a non-linear failure envelopes and strain softening behaviour at a normal stress range of 50 – 400 kPa. For most interface tested, the polyester-geotextiles resulted in higher shear strength as compared with polypropylene-geotextiles. Also, the polyester and polypropylene geotextile interface with the high asperity geomembrane produces a similar percentage increase in friction angle at the residual state. For textured geomembranes interfaced with both geotextile, polyester geotextile exhibited relatively less time before failure. Also, asperity height has a more pronounced effect than asperity density on the residual interface shear strength. The outcome of this study would provide a recommendation and guide that can lead to an improved basis for geosynthetics selection in various engineering application.

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Frictional behaviour of three critical geosynthetic interfaces

Cited by 25 publications

References 35 publications

Evaluating the Effect of Soil Particle Characterization on Internal Friction Angle

Evaluating the Effect of Soil Particle Characterization on Internal Friction Angle

Experimental Study on the Interface Characteristics of Reinforced Crushed Rock Cushion Layer Based on Direct Shear Tests

Asperities effect on polypropylene & polyester geotextile-geomembrane interface shear behaviour

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