Undrained Cyclic Shear Behaviour of Reconstituted Scoria Deposit

Agustian, Yanyan; Goto, Shigeru

doi:10.3208/sandf.48.851

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Several researchers Bopp and Lade 2005;Shahnazari and Rezvani 2013) illustrated that the degree of particle crushing in undrained tests was lower compared to the drained tests because the D r a f t effective mean stress sustained by soil particles was lower. Agustian and Goto (2008) observed substantial particle breakage of scoria specimens after undrained cyclic loading. The crushing behaviour of granular material subjected to cyclic loading in drained conditions has attracted the attentions of several researchers in recent decades (Donohue et al 2009;López-Querol and Coop 2012;Sun et al 2014).…”

Section: Introductionmentioning

confidence: 81%

Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Hyodo

Aramaki

et al. 2017

Can. Geotech. J.

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A series of undrained monotonic and cyclic triaxial tests were performed on silica sand at two initial densities and different confining pressures from 0.1 to 5 MPa to investigate their shear response and crushing behaviour. The influence of particle crushing on the undrained shear strength and pore-water pressure was examined. To clarify the evolution of particle crushing, undrained monotonic and cyclic tests were terminated at several distinctive stages and sieving analysis tests were subsequently performed on the tested specimens. In the undrained monotonic test, specimens exhibited remarkable dilation behaviour and experienced no apparent particle crushing at low confining pressures. An increase in the mean stress suppressed the dilatancy due to a faster increase of the pore-water pressure, giving rise to the occurrence of particle crushing. In the undrained cyclic test, a higher confining pressure and cyclic stress ratio resulted in a much higher relative breakage. At a specific cyclic stress ratio, the relative breakage increased as the cyclic loading progressed. The confining pressure and shear strain amplitude played a significant role in controlling the evolution of particle breakage. The correlation between the relative breakage and plastic work for specimens under isotropic consolidation, undrained monotonic, and cyclic loadings has been validated experimentally.

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Section: Introductionmentioning

confidence: 81%

Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Hyodo

Aramaki

et al. 2017

Can. Geotech. J.

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“…High-level strains induced by grain transformation and rotation during cyclic loading lead to grain damage. Agustian and Goto (2008) performed a series of undrained cyclic shearing tests on scoria aggregates and observed a substantial amount of particle crushing. Past investigations have showed that both weak and hard-grained sands can be crushed after undrained cyclic shearing (Yoshimoto et al 2014;Liu et al 2015Liu et al , 2016Li et al 2016;Hyodo et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Influence of Load Mode on Particle Crushing Characteristics of Silica Sand at High Stresses

Yamamoto

Cui

et al. 2020

Int. J. Geomech.

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A series of high-pressure compression tests with various stress paths under monotonic and cyclic loadings were performed to examine the compression and particle crushing characteristics of silica sand in a dense state. Different stress paths were particularly designated to individually investigate the influences of mean and shear stress on particle crushing. Test results show that the degree of particle crushing increases with the stress level and is pronouncedly affected by the stress paths. For each compression test following a designated stress path, an increase in the cyclic loading number also enhances the degree of particle crushing.Particle morphology is affected by the accompanying occurrence and evolution of grain damage. Notably, the relative breakage expresses a liner relationship with the maximum volumetric strain during monotonic and repeated compression loadings. A good correlation between the relative breakage and plastic work per unit volume is obtained for silica sand at various mean stresses regardless of the stress history. However, this correlation is affected by cyclic loading number because of different crushing mechanisms. During the entire cyclic compression process, the increasing rate of relative breakage is lower than the plastic work increment for dense silica sand as the cyclic loading progresses.

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“…Natural and artificial frozen soils have been widely studied for decades [1] [2][3] [4]. The behaviour of scoria in triaxial tests has been studied both in monotonic [5] and cyclic [6]to observe its mechanical behaviour.…”

Section: Introductionmentioning

confidence: 99%

The Behaviour of Frozen Scoria in Unconfined Compression Test

Agustian¹

2019

cea

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The mechanical behaviour of the frozen or partially frozen soil changes significantly as soon as the ice holds the soil particles together. The strength of frozen soil can increase significantly. However, due to the temperature dependency and viscose nature of ice, the strength of frozen soils changes with time, strain rate and temperature. Water migration towards the ice lenses occurs during the freezing process depending on the characteristics of the soil, i.e. grain size and mineralogy, resulting in a significant change of the soil structure. Frost heaving may be the result, induced by the expansion of the water as it changes phase from frozen state. The aim of this study is to determine the unconfined compressive strength to calculate the unconsolidated shear strength of the frozen scoria under unconfined conditions. In unconfined compression tests, the influence of dry density ρ d and water content w to the unconfined compression behaviour of frozen scoria was observed. The compressive strength of frozen scoria increases with the increase of w as well as the increase of ρ d and the compressive strain of frozen scoria ε f (axial strain at failure) is dependent on ρ d.. Although some data scatters appear caused by the inhomogeneous of the samples, the effects of w and ρ d to the stiffness of frozen scoria were observed. As well as initial Young's modulus E 0 , secant modulus E 50 of frozen scoria increases with the increasing of w and ρ d .

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Undrained Cyclic Shear Behaviour of Reconstituted Scoria Deposit

Cited by 5 publications

References 9 publications

Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Influence of Load Mode on Particle Crushing Characteristics of Silica Sand at High Stresses

The Behaviour of Frozen Scoria in Unconfined Compression Test

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