Liquefaction Susceptibility Criteria for Silts and Clays

Boulanger, Ross W.; Idriss, I. M.

doi:10.1061/(asce)1090-0241(2006)132:11(1413)

Cited by 340 publications

(132 citation statements)

References 28 publications

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“…It is essential to identify silts behaving as sand-like or clay-like. Boulanger and Idriss (2006) found that sand-like (behaving more fundamentally as sand) and clay-like soils (behaving more fundamentally as clay) have some fundamental differences in terms of stress-strain behaviour, compressibility and the slope of the critical-state line (CSL) in the e-ln p 0 space against the slope of the normally consolidated line (NCL). The major observations of Boulanger and Idriss (2004) include the following.…”

Section: Introductionmentioning

confidence: 99%

“…In a subsequent study, Boulanger and Idriss (2006) proposed that materials with P I less than 7% would have a sand-like behaviour, while materials with P I greater than or equal to 7% would exhibit a clay-like behaviour. In addition, it was also described that finegrained soils with P I values between 3 and 6% may exhibit a transitional behaviour.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, an appropriate procedure for examining the liquefaction resistance of soils was developed based on the behaviour of the materials. Boulanger and Idriss (2006) stated that the Atterberg limits tests are more reliable than particle size analysis, particularly for clays (i.e. <2 mm), in order to correlate to the stress-strain characteristics of soils and also to differentiate between clay-like and sand-like behaviours.…”

Section: Introductionmentioning

confidence: 99%

“…Much research has been reported on low-plasticity silt (ML), with a liquid limit (L L ) lower than 50% -namely, by Wang and Luna (2012), Boulanger and Idriss (2006), Nocilla et al (2006) and Hyde et al (2006). They dealt with the characterisation and/or mechanical properties of ML.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Behaviour of MH silts with varying plasticity indices

Wong

Ong

Robinson

2017

Geotechnical Research

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It is important for geotechnical engineers to understand the intrinsic and mechanical behaviour of silt as it is presently recognised that there exist gaps in understanding its fundamental behaviour. The behaviour of kaolin samples with varying clay and silt contents was investigated in the present study. This study characterised the samples by their corresponding ranges of plasticity index (P I ) -namely, P I £ 13% and P I > 13%. This outcome is achieved by interpreting the results of Atterberg limit tests, particle size analysis, isotropically consolidated undrained triaxial tests and oedometer tests carried out on the kaolin samples with P I between 7 and 16%. The results obtained in this study show good reliability when compared to 65 sets of past significant experimental studies derived from 33 established past research papers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Behaviour of MH silts with varying plasticity indices

Wong

Ong

Robinson

2017

Geotechnical Research

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“…Liquefaction is mostly observed in sandy soils, but the results of comprehensive investigations carried out in the last decades have shown that sands containing some portion of a fine fraction may liquefy as well (Yamamuro andCovert 2001, Boulanger andIdriss 2006).…”

Section: Introductionmentioning

confidence: 99%

Modelling of Post-flotation Tailings Liquefaction Induced by Paraseismic Events

Świdziński

2016

Archives of Hydro-Engineering and Environmental Mechanics

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This paper presents and discusses the results of numerical modelling of pore water pressure build-up in post-flotation saturated tailings deposited at the Tailings Storage Facility "Żelazny Most", caused by seismic-induced dynamic loading. Numerical simulations were based on the compaction/liquefaction model proposed by A. Sawicki. The model parameters were determined in the laboratory for tailings sampled at the TSF "Żelazny Most". The sensitivity of the numerical model was verified in a series of numerical tests for various horizontal acceleration amplitudes. In the main calculations, an accelerogram recorded during a real paraseimic event was assumed. The results obtained show that, with the current seismic activity near the TSF "Żelazny Most", some pore water pressure is generated within the saturated tailings layer, but it does not trigger the liquefaction phenomenon.

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Influence of diatom microfossils on sediment shear strength and slope stability

Wiemer

Kopf

2017

Geochem Geophys Geosyst

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Diatom microfossils have been detected in many natural marine sediment deposits around the globe and are held responsible for the disobedience to well-established geotechnical relationships between index-properties and shear strength. We revisit the static shear strength and present the first cyclic undrained shear strength experiments on diatom microfossil-clayey-silt mixtures to study the role of diatoms on submarine slope stability. It is attested that the angle of internal friction (U) increases with diatom content, however, we provide evidence for a significant overestimation of U in previous studies. Based on direct shear tests at varying normal stresses 600 kPa we find U 5 328 in contrast to 438 in pure diatom. Similarly, to static shear strength, cyclic shear strength increases with diatom content, however, in contrast to static shear strength the most drastic increase does not occur from 0% to 25% diatoms but from 75% to 100%. Interestingly, diatomaceous sediments tend to fail by liquefaction although well-established relations between index properties and liquefaction susceptibility predict the opposite. Liquefaction failure is observed solely in samples containing 50% diatoms whereas samples with lower diatom content fail by cyclic softening. We conclude diatom microfossils in marine sediments significantly contribute to an increased slope stability under static and cyclic loading conditions since diatoms lead to higher resistance independently of the loading mode. The strength increase is interpreted as a result of particle interlocking and surface roughness, which is very efficient given the highly variable habitus of diatom species.

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Liquefaction Susceptibility Criteria for Silts and Clays

Cited by 340 publications

References 28 publications

Behaviour of MH silts with varying plasticity indices

Behaviour of MH silts with varying plasticity indices

Modelling of Post-flotation Tailings Liquefaction Induced by Paraseismic Events

Influence of diatom microfossils on sediment shear strength and slope stability

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