Tensile strength of wet granula materials

Pierrat, Patrice; Caram, Hugo S.

doi:10.1016/s0032-5910(96)03179-8

Cited by 155 publications

(90 citation statements)

References 20 publications

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“…Several theoretical and experimental studies have shown that soil tensile strength is closely related to water content and that it increases non-linearly with increasing matrix suction (e.g., Kim and Hwang, 2003). The equations used to calculate tensile strength for this study are based on the approach presented by Pierrat and Caram (1997) and relations developed by Schubert (1972) so that,…”

Section: Tensile Strengthmentioning

confidence: 99%

Laboratory investigation of beach scarp and dune recession due to notching and subsequent failure

2007

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Analytical models to calculate notch development and subsequent mass failure of dunes are presented. The notch evolution model is based on a transport equation for sediment from the dune and the sediment volume conservation equation, whereas the models of mass failure are derived using elementary engineering statics and soil mechanics. An empirical transport coefficient in the model describing the notch growth rate is found to be related to the hydrodynamic forcing at the dune normalized by geotechnical parameters describing the resistive strength of the dune. Two modes of mass failure are modeled whereby the overhang generated by the removal of material from the dune foot (notching) slides downward or topples over following the development of a tensile crack some distance shoreward of the maximum notch depth. The accuracy of the notch evolution and mass failure models are assessed by comparing calculated recession distances against measurements from a small-scale laboratory experiment.

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Section: Tensile Strengthmentioning

confidence: 99%

Laboratory investigation of beach scarp and dune recession due to notching and subsequent failure

2007

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“…Theories proposed by Rumpf (1961) and Schubert (1975aSchubert ( , 1984 to predict tensile strength of powders have found its application in the field of unsaturated granular soils. Likewise, many experimental methods developed to measure tensile strength of glass beads and powders have been used to determine tensile strength of unsaturated sands (Schubert 1975b, Pierrat andCaram 1997;Perkins 1991). …”

Section: Contact Angle Degreesmentioning

confidence: 99%

Effect of Pore-Water Surface Tension on Tensile Strength of Unsaturated Sand

2016

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Tensile behaviour of unsaturated sand was investigated both experimentally and theoretically.A custom-built direct tension apparatus was employed to perform direct tension tests on unsaturated silica sand specimens at different saturations levels and packing dry densities.Attempt was made to understand the effect of surface tension of pore-liquid and tensile loading rate on the tensile strength. It was found that the tensile strength decreases, as the surface tension of the pore-liquid decreases and rate of loading increases. However, tensile strength does not decrease as a simple multiple of ratio of surface tension of pore-liquid. The experimental results were also compared with the predicted results from two theoretical tensile strength models, namely, micro-mechanical and the macro-mechanical models. Results predicted using the micro-mechanical model agreed well with the experimental results, but only for specimens containing distilled water in the pendular saturation regime. On the other hand, the macro-mechanical model followed the experimental trend across pendular and funicular saturation regimes for specimens containing distilled water reasonably well.However, at reduced surface tension of pore-liquid, both models significantly under-predicted the experimental tensile strength results.iii ACKNOWLEDGEMENTS Foremost, I would like to express the deepest appreciation to my thesis supervisor and mentor, Dr. Jitendrapal Sharma, who has the attitude and the substance of a genius. Without his guidance and relentless encouragement, my thesis would not have been possible. I would also like to thank him for his financial support throughout the course of the researchwork.Thanks for everything, Dr. Sharma.In addition, a big thank you to my co-supervisor Dr. Rashid Bashir, whose expertise in unsaturated soil mechanics helped me to structure my research and thesis. He has shared valuable insights in the relevance of the study and made this research successful. I would also

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“…This force depend on the particle diameter "d", on the liquid superficial tension " L ", and on a function that takes into account the contact angle "Â", the filling angle of the liquid bridge "ˇ" (Fig. 2), and the ratio of the distance between particles with the particles average diameter "a/d" [2,8]:…”

Section: Introductionmentioning

confidence: 99%

“…(1) and (2) give the Rumpf's law of a granular medium which is proportional to the inverse of the average particle size [8]:…”

Section: Introductionmentioning

confidence: 99%

Mixing of a wet granular medium: Effect of the particle size, the liquid and the granular compacity on the intensity consumption

Collet

Oulahna

Ryck

et al. 2010

Chemical Engineering Journal

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Tensile strength of wet granula materials

Cited by 155 publications

References 20 publications

Laboratory investigation of beach scarp and dune recession due to notching and subsequent failure

Laboratory investigation of beach scarp and dune recession due to notching and subsequent failure

Effect of Pore-Water Surface Tension on Tensile Strength of Unsaturated Sand

Mixing of a wet granular medium: Effect of the particle size, the liquid and the granular compacity on the intensity consumption

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