Sidere: numerical prediction of large-strain consolidation

Bartholomeeusen, Gert; Sills, G. C.; Znidarčić, Dobroslav; Kesteren, W. van; Merckelbach, Lucas; Pyke, Robert; Carrier, W. David; Lin, Hung-Hsi; Penumadu, Dayakar; Winterwerp, Han; Masala, S.; Chan, Dave

doi:10.1680/geot.2002.52.9.639

Cited by 60 publications

(44 citation statements)

References 12 publications

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“…For one-dimensional large-strain theory, Gibson et al (1981) used a continuum model to describe the large-strain consolidation of a layer of soil under its own weight. Since Gibson's publication, experimental and numerical issues of one-dimensional large-strain consolidation have been reported (Znidarcic et al, 1984;Tan et al, 1990;De Boer et al, 1996;Sills, 1998;Toorman, 1999;Bartholomeeusen et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

A large-strain radial consolidation theory for soft clays improved by vertical drains

Geng

2017

Géotechnique

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A system of vertical drains with combined vacuum and surcharge preloading is an effective solution for promoting radial flow, accelerating consolidation. However, when a mixture of soil and water is deposited at a low initial density, a significant amount of deformation or surface settlement occurs. Therefore, it is necessary to introduce large-strain theory, which has been widely used to manage dredged disposal sites in one-dimensional theory, into radial consolidation theory. A governing equation based on Gibson's large-strain theory and Barron's free-strain theory incorporating the radial and vertical flows, the weight of the soil, variable hydraulic conductivity and compressibility during the consolidation process is therefore presented.

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Section: Introductionmentioning

confidence: 99%

A large-strain radial consolidation theory for soft clays improved by vertical drains

Geng

2017

Géotechnique

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“…7. Superimposed on the electrically induced (EK) settlement and the pore water pressure dissipation data are the gravity settlement and pressure dissipation curves reported by Bartholomeeusen and co-workers for similar solids content clay slurry at the same vertical depth [6]. The mass densities of the slurries were 1.65 g/cm 3 , and 1.556 g/cm 3 for the EK and gravity settlements tests, respectively.…”

Section: Resultsmentioning

confidence: 77%

Electrically induced pore pressures in high salt content clay slurry

Muraoka

Ghazanfari

Shrestha

et al. 2011

Separation and Purification Technology

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“…Grasso et al (2014) analysed data from a number of previous settling column studies (e.g. Bartholomeeusen et al 2002;Merckelbach and Kranenburg 2004a;te Slaa et al 2013;van and Pham Van Bang 2013) investigating hindered settling of sand-mud mixtures over a wide range of initial concentrations and sand contents. The analysis revealed that sand segregation within the resulting deposits was not always observed and appeared to be prevented at a threshold level of the initial relative mud concentration (e.g.…”

Section: Previous Work On Sand-mud Sedimentationmentioning

confidence: 99%

Monitoring and characterisation of sand-mud sedimentation processes

et al. 2016

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Estuaries and tidal inlets are often characterised by the presence of both cohesive and non-cohesive sediments. Knowledge of the sedimentation behaviour of sand-mud mixtures is therefore crucial to the understanding and prediction of the time-dependent structure (i.e. mixed or segregated), composition and erodibility of sediment bed deposits developing within these environments. In the current study, a series of settling column tests are conducted to investigate the hindered settling and initial bed consolidation phases of a range of sandclay mixtures to determine the parametric conditions under which bed segregation occurs. A new, non-invasive, electrical resistivity measurement technique is employed to capture both temporal and spatial changes in the density, porosity and composition of the evolving sand-clay bed deposits, complimented by time-lapsed images of the sedimentation process within the column. The results show that the formation of segregated (sand-clay) bed layers with bed deposits is largely controlled by the initial fractional composition (i.e. relative sand and clay concentrations). Specifically, mixtures with low clay contents are shown to form well-defined (sandclay) layer segregation within the resulting deposits, while higher clay contents result in more transitional segregation patterns or no layer segregation (for very high clay concentrations). The physical mechanisms under which these different segregation types can be generated are illustrated through predictions from an existing polydisperse hindered settling model. This model indicates that the degree of bed segregation, and time scale over which this occurs, correlates well with the difference in predicted hindered settling characteristics and upward displacements associated with the sand and clay fractions, respectively. In this regard, the new experimental dataset provides validation for the polydisperse model (for the first time), with the combined data and model predictions providing new insight into mixed (sand-clay) sedimentation processes.

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Sidere: numerical prediction of large-strain consolidation

Cited by 60 publications

References 12 publications

A large-strain radial consolidation theory for soft clays improved by vertical drains

A large-strain radial consolidation theory for soft clays improved by vertical drains

Electrically induced pore pressures in high salt content clay slurry

Monitoring and characterisation of sand-mud sedimentation processes

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