Particle Gradation and Liquefaction

Vaid, Y. P.; Fisher, Jennifer M.; Kuerbis, R.; Negussey, Dawit

doi:10.1061/(asce)0733-9410(1990)116:4(698)

Cited by 58 publications

(13 citation statements)

References 3 publications

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“…15(a) conˆrms that the residual strains increase considerably with increasing coe‹cient of uniformity Uc of the tested sand. This is in contrast to the results of undrained cyclic tests performed on sands with diŠerent Uc-values (Vaid et al, 1990;Kokusho et al, 2004). In those tests, no in‰uence of U c on the liquefaction resistance could be found if the specimens were prepared with similar relative densities.…”

Section: Intensity Of Strain Accumulation Strain Amplitudecontrasting

confidence: 73%

Validation and Calibration of a High-Cycle Accumulation Model Based on Cyclic Triaxial Tests on Eight Sands

Wichtmann¹,

Niemunis²,

Triantafyllidis³

2009

Soils and Foundations

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Section: Intensity Of Strain Accumulation Strain Amplitudecontrasting

confidence: 73%

Validation and Calibration of a High-Cycle Accumulation Model Based on Cyclic Triaxial Tests on Eight Sands

Wichtmann¹,

Niemunis²,

Triantafyllidis³

2009

Soils and Foundations

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“…Additionally, water sedimentation of particle mixtures has been shown to yield segregation between the large and small particles [21,44]. However, specimen preparation using dry funnel deposition with close to zero falling height has been widely used to produce relatively uniform specimens with good mixing of large and small particles [16,21,46].…”

Section: Sample Preparationmentioning

confidence: 99%

Shear wave velocity of granular mixtures of silica particles as a function of finer fraction, size ratios and void ratios

Choo

Burns

2015

Granular Matter

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This experimental investigation quantified the shear wave velocity (V s ) of granular packs composed of large grains mixed with small quantities of finer grains, up to the critical fines content (FC * ). Bender element tests were performed on 112 mixtures to quantify the variation of V s with fines content (FC), particle size ratio, and void ratio. When FC was less than FC * , the shear wave velocity decreased with increasing FC, due to the reduction in interparticle contacts between large grains. In addition, the observed reduction in packing stiffness was more apparent as the size difference between the two particles increased. Most notably, the results of this study demonstrated that V s of granular mixtures of two different silica particles with FC < FC * was best expressed in terms of intergranular void ratio when finer particles were treated as void space, as opposed to the global void ratio.

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“…The authors inferred that the small-size grains in the wider gradation sand may have an effect similar to that of adding fines to a sand: that is, they increase their liquefaction potential. Vaid et al (1990b) studied the effect of particle gradation on liquefaction. Although the gradations they tested referred to D 50 ¼ 0 .…”

Section: Effect Of Gradingmentioning

confidence: 99%

The undrained response of sands with additions of particles of various shapes and sizes

Georgiannou

2006

Géotechnique

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As a natural deposit, sand is rarely found clean-that is, without fractions of silt or clay. The engineering behaviour of two different host sand gradations mixed with additions of particles of various shapes and sizes is compared with that of clean sand. Anisotropically consolidated specimens are sheared in triaxial compression and extension at their 'loosest' initial state resulting from the same depositional method, namely air pluviation. Additive materials at contents less than 2 . 5% by weight can dramatically change the undrained behaviour of the host sand. The addition of rotund particles (e.g. silt) should be distinguished from that of flat or platy particles of different size (e.g. kaolin, silt or sand-size mica). The importance of shape and location of additives in modifying the sand structure is not reflected in measures such as void ratio. Mixtures of both sands with silt-size mica exhibit the most unstable response, although these had the lowest values of void or granular void ratio. The undrained response of each sand mixed with different amounts of sand-size mica is also presented. An increase in mica content usually leads to more stable behaviour at contents above a certain threshold, depending on the grading of the sand. The shear response of the sands and most mixtures is much weaker and more contractive in triaxial extension than in triaxial compression. High anisotropy is also indicated by the stiffness measurements at small strains in both loading directions.

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Particle Gradation and Liquefaction

Cited by 58 publications

References 3 publications

Validation and Calibration of a High-Cycle Accumulation Model Based on Cyclic Triaxial Tests on Eight Sands

Validation and Calibration of a High-Cycle Accumulation Model Based on Cyclic Triaxial Tests on Eight Sands

Shear wave velocity of granular mixtures of silica particles as a function of finer fraction, size ratios and void ratios

The undrained response of sands with additions of particles of various shapes and sizes

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