Influence of Non-Plastic Fines on the Response of a Silty Sand to Cyclic Loading

Dash, H. K.; Sitharam, T. G.; Baudet, BA

doi:10.3208/sandf.50.695

Cited by 47 publications

(12 citation statements)

References 26 publications

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“…Apart from these studies, computer simulation analyses using the discrete element method have also been carried out to study the characteristics of the limit void ratio of particle mixtures. The trend of computer simulation results resembles that obtained from experimental tests [36][37][38].…”

Section: Introductionsupporting

confidence: 66%

Experimental Investigation into Limit Void Ratio Characteristics of Calcareous Sands considering Various Factors

Lei

Guo

et al. 2021

Geofluids

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Relative density is an important index affecting the mechanical behaviors of calcareous sands. The dense sands present softening strength, whereas the loose sands exhibit hardening strength. Furthermore, the relative density is determined based on the maximum and minimum void ratios obtained by using the maximum and minimum dry density test. In this study, a series of tests were carried out on various mixed graded sands to explore their material properties and the relationship between the limit void ratio, considering the effects of test methods, equipment, and fine content. It is shown that a more accurate maximum void ratio can be attained by using the 1000 mL measuring cylinder with low rotation speed. In addition, in order to avoid particle breakage of calcareous sands, it is suggested that the minimum void ratio should be obtained with the 1000 mL compaction cylinder combining vibration with hit. The results also show that a linear relationship exists among the limit void ratio of various mixed graded sands. Besides, the void ratio is significantly affected by the fine content. 40% is the critical fine content corresponding to the lowest value of the limit void ratio.

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Section: Introductionsupporting

confidence: 66%

Experimental Investigation into Limit Void Ratio Characteristics of Calcareous Sands considering Various Factors

Lei

Guo

et al. 2021

Geofluids

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“…Based on the sand−fines mixture with a size ratio R between 10 and 15, several studies (Yang et al 2006a, Papadopoulou & Tika 2008, Dash et al 2010) have revealed a threshold FC between 20 and 30%.…”

Section: Materials and Methodologymentioning

confidence: 99%

Effects of particle breakage on the compression behaviour of gap graded carbonate sand–silt mixtures

Chiu

Cheng

et al. 2021

Géotechnique Letters

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Isotropic compression tests were conducted on a series of gap graded mixtures of a carbonate sand (CS) from the South China Sea and a fine crushed quartz silt to reveal how particle breakage of the CS can affect the compression behaviour of these soil mixtures. The weaker CS originally exhibited a unique compression line whereas the stronger quartz silt originally had a stable soil fabric leading to non−convergent compression lines. It was found that the threshold fines content (FC) indicating a change from CS to silt dominated soil matrix, together with the suppression of particle breakage, have governed the change from converging to non−converging compression behavior and from non−stable to stable soil fabric for these gap graded soil mixtures. For FC ≤ 30%, the soil mixtures exhibited a unique compression line because of the substantial breakage of the weaker CS particles in the CS dominated soil matrix. However, for FC ≥ 40% (threshold FC), non−convergent compression lines were observed for the soil mixtures. It was suggested that since the weaker CS particles did not actively participate in load bearing of the silt dominated soil matrix, there was insignificant particle breakage of the CS and the initial soil fabric remained stable at high stress level.

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“…The behaviour of non-plastic fines-sand mixtures has been extensively researched, experimentally (e.g. Lade et al, 1998;Salgado et al, 2000;Polito & Martin, 2001;Georgiannou, 2006;Yang et al, 2006;Dash et al, 2010;Carrera et al, 2011;Wichtmann et al, 2015;Goudarzy et al, 2016a,b;Zuo & Baudet, 2015;Liu & Yang, 2018), and numerically (e.g. Voivret et al, 2009;Minh et al, 2014;To et al, 2014;Shire et al, 2014;.…”

Section: Introductionmentioning

confidence: 99%

Normalised behaviour of a non-plastic silt–pumice sand mixture

Zuo

Baudet

2020

Géotechnique

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The existence and failures of silty sand have been reported worldwide, and the behaviour of sand-silt mixtures at small to large strains has been intensively studied. Due to the relatively low stress level achieved in laboratory testing, no unifying framework has yet been proposed for sand-silt mixtures. In the presented work, a crushable sand, made of pumice, was used as host sand so as to reach a unique Normal Compression Line under pressures easily attainable in the laboratory. The sand was combined with non-plastic fines in proportions varying between 0% and 100%, and tested in compression and shearing with associated bender element testing for small strain stiffness measurements. The unique relationship between pressure and volume on the Normal Compression Line allowed for the normalisation of the data in a way that highlights the effects of fines irrespective of the density. It was found that once the effects of the fines on the index properties and compressibility have been cancelled, by normalising for volume, the behaviour of the sand-silt mixtures can be characterised as unique.

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Influence of Non-Plastic Fines on the Response of a Silty Sand to Cyclic Loading

Cited by 47 publications

References 26 publications

Experimental Investigation into Limit Void Ratio Characteristics of Calcareous Sands considering Various Factors

Experimental Investigation into Limit Void Ratio Characteristics of Calcareous Sands considering Various Factors

Effects of particle breakage on the compression behaviour of gap graded carbonate sand–silt mixtures

Normalised behaviour of a non-plastic silt–pumice sand mixture

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