Effect of Silt Content on the Anisotropic Behaviour of Silt-Sand Mixtures

Khayat, Navid

doi:10.21660/2014.14.140601

Cited by 2 publications

(2 citation statements)

References 20 publications

(29 reference statements)

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“…The modulus reduction and damping curves can be fit with other soil models including Vucetic-Dobry, and Hyperbolic [11,12]. These data are still in a relatively low strain range when compared to other TOSS data [13,14]. A full discussion of models, data fitting, and application to site response analysis or other geotechnical models such as t-z curves are beyond the scope of this paper.…”

Section: Fig6 G From Be Tests Under Different σ1 and σ3mentioning

confidence: 99%

Soil Shear Modulus From Resonant Column, Torsional Shear and Bender Element Tests

Szilvágyi¹

2016

geomate

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This study compares results from three different testing methods: Resonant Column, Torsional Simple Shear, and Bender Element tests to determine shear modulus. The resonant column and torsional shear tests were performed on the same hollow cylinder specimen. The bender element test was performed on a triaxial specimen with the same void ratio and confining stress as well as others. Several effects were studied, among them confining stress, shear strain amplitude and for the bender element, anisotropic confinement. Testing methods and data analysis are discussed in the paper because data interpretation is very important in these tests. Results showed that the shear modulus values were almost identical between the resonant column and torsional shear but varied somewhat with the bender element results. Further research will focus on influence of stress anisotropy preparation methods.

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Section: Fig6 G From Be Tests Under Different σ1 and σ3mentioning

confidence: 99%

Soil Shear Modulus From Resonant Column, Torsional Shear and Bender Element Tests

Szilvágyi¹

2016

geomate

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“…Rabbi et al [33] defined undrained instability based on the steady behavior observed on the instability line. Different authors have analyzed the influence of fines content on the onset of undrained instability and on the position of the instability line [34][35][36][37][38][39][40][41]. Additionally, [42][43][44][45] studied the effect of sample preparation on the locus of the onset of undrained instability.…”

Section: Introductionmentioning

confidence: 99%

Effects of initial stress anisotropy on the onset of undrained instability for Guamo sand

Prada-Sarmiento

Ramos-Cañón

Tauta

2022

Rev.Fac.Ing.Univ.Antioquia

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Undrained instability is a failure mode that has been observed in many sandy slopes. However, the highly anisotropic stress states caused by the geometry of the slope have not been duly considered from the experimental point of view. This article studies the influence of the initial stress anisotropy of laboratory samples on the static undrained instability of the Colombian reference sand. Forty-five consolidated undrained triaxial tests were performed, prescribing combinations of different initial void ratios, mean confining pressure, and initial stress ratios. Experimental results allow concluding that: a. the size of the instability zone on the p′ − q plane becomes smaller for larger initial anisotropic stress ratios; b. a novel undrained instability plane can be proposed in the p′ − q − e space to set a boundary between stable and unstable undrained loading conditions; c. mean confining pressure plays a vital role in the estimation of undrained instability for Guamo sand samples under low and medium confining stresses; d. despite multiple factors that influence the onset of undrained instability, a relation can be derived between the undrained instability susceptibility of sandy slopes and the initial stress ratio η0.

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Effect of Silt Content on the Anisotropic Behaviour of Silt-Sand Mixtures

Cited by 2 publications

References 20 publications

Soil Shear Modulus From Resonant Column, Torsional Shear and Bender Element Tests

Soil Shear Modulus From Resonant Column, Torsional Shear and Bender Element Tests

Effects of initial stress anisotropy on the onset of undrained instability for Guamo sand

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