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Compression and Strength Characteristics of Two Silts of Low and High Plasticity

Georgiannou, VN; Coop, MR; Altuhafi, FN; (2018) Compression and Strength Characteristics of Two Silts of Low and High Plasticity. Journal of Geotechnical and Geoenvironmental Engineering , 144 (7) , Article 04018041. 10.1061/(ASCE)GT.1943-5606.0001891. Green open access

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Abstract

The potential for enhanced strength or stiffness arising from the microstructure of natural silty soils compared with their reconstituted state is examined using the framework for clays, to assess the extent to which it can be used for silts. A detailed study performed on two clayey silts of low and high plasticity, respectively, in their intact and reconstituted state, is used to illustrate the different response of the silts compared with clays in terms of compressibility and strength, e.g., multiplicity and shape of the normal compression lines and strong dilative tendencies during undrained and drained shearing. This paper shows that the response of the reconstituted silts can be used as a reference to identify the influence of the microstructure on the compressibility and strength of the intact silts. The results are found to give clear signs of structure in both compression and shearing only for the low-plasticity silt. Stiffness measurements corroborate these findings.

Type: Article
Title: Compression and Strength Characteristics of Two Silts of Low and High Plasticity
Open access status: An open access version is available from UCL Discovery
DOI: 10.1061/(ASCE)GT.1943-5606.0001891
Publisher version: http://doi.org/10.1061/(ASCE)GT.1943-5606.0001891
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10040985
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