Johan Sverdrup – Assessment of Soil Material Behaviour and Strength Properties for the Shallow Silt Layer

Solhjell, E.; Strandvik, SO; Carroll, Roselyn; Haland, G.

doi:10.3723/osig17.1275

Cited by 2 publications

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“…drive U100 or split spoon samplers (Bray et al 2004;Long 2007), both of which have a poor geometry with a large area ratio and cutting angle; (ii) thin-walled samplers with a better geometry, including Shelby tubes of various diameters (Brandon et al 2006;Nocilla et al 2006) and; (iii) different fixed piston samplers with thin-walled tubes (Høeg et al 2000;Bray and Sancio 2006;Long et al 2010;Solhjell et al 2017). Although large diameter block type samplers, e.g.…”

Section: Silts and Intermediate Low Plasticity Soils Have Traditionalmentioning

confidence: 99%

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Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt

Blaker

DeGroot

2020

J. Geotech. Geoenviron. Eng.

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This paper presents a laboratory investigation of undrained triaxial shear behavior of a natural low plasticity silt from Halden, Norway in the intact, disturbed and reconstituted states. Sherbrooke block sample and reconstituted specimens were subjected to simulated tube sampling in a triaxial stress path cell system prior to reconsolidation and undrained shear to assess the effects of disturbance on undrained shear behavior, undrained shear strength and effective stress friction angle. Shear stress and pore pressure development were evaluated relative to that measured for the undisturbed reference state taken as that measured on specimens from the intact block sample. Furthermore, specimens trimmed from fixed piston tube samples collected from the field site were also tested for comparative purposes. Collectively, the results demonstrate that neither the volumetric method of evaluating sample quality for clays nor shear wave velocity track sample disturbance well for this low plasticity silt. Relative to the reference intact block sample tests simulated tube sampling results in an increasingly pronounced dilative type behavior during post-disturbance undrained shear and a general increase in undrained shear strength. Specimens from the block sample that were subjected to simulated tube sample disturbance showed similar stress-strain behavior to that from conventional anisotropically consolidated triaxial compression tests conducted on specimens from the tube samples, suggesting that significant alteration of the intact soil state occurred during tube sampling. Practical suggestions for selection of undrained shear strength for intact low plasticity silts that exhibit dilative behavior such as the Halden silt are proposed.

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Section: Silts and Intermediate Low Plasticity Soils Have Traditionalmentioning

confidence: 99%

“…recommended criterion (3) Solhjell et al (2017). evaluated su for a North Sea offshore silty, sandy, clayey soil unit for which the project design basis required both lower and upper bound estimates of su.…”

mentioning

confidence: 99%

Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt

Blaker

DeGroot

2020

J. Geotech. Geoenviron. Eng.

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show abstract

Closure to “Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt” by Øyvind Blaker and Don J. DeGroot

Blaker

DeGroot

2021

J. Geotech. Geoenviron. Eng.

View full text Add to dashboard Cite

Johan Sverdrup – Assessment of Soil Material Behaviour and Strength Properties for the Shallow Silt Layer

Cited by 2 publications

References 0 publications

Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt

Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt

Closure to “Intact, Disturbed, and Reconstituted Undrained Shear Behavior of Low-Plasticity Natural Silt” by Øyvind Blaker and Don J. DeGroot

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