New triaxial device for unsaturated soils with local measurements

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Abstract

A new triaxial device is proposed to perform a complete local monitoring of the state of an unsaturated soil sample during triaxial testing by the use of local measurement devices comprising the measurement of local displacements (Hall Effect transducers), water content (new resistivity probe) and suction (High capacity transducer). Two triaxial tests were carried out on loess specimens (from 3.3 m in depth) from Northern France with this device at low stresses in the range of in-situ stresses. This soil is characterized by its sensitivity to collapse and a metastable structure. The in-situ stress state was reproduced by mean of a K0 stress path (keeping lateral strain to zero). Results showed good quality and provided some preliminary behavior characteristics of a natural unsaturated loess, a type of material rarely tested up to now in the literature. They also showed the device quality and reliability.

Original languageEnglish
Title of host publicationUnsaturated Soils
Subtitle of host publicationResearch and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014
PublisherTaylor and Francis - Balkema
Pages1617-1622
Number of pages6
ISBN (Print)9781138026902
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event6th International Conference on Unsaturated Soils, UNSAT 2014 - Sydney, NSW, Australia
Duration: 2 Jul 20144 Jul 2014

Publication series

NameUnsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014
Volume2

Conference

Conference6th International Conference on Unsaturated Soils, UNSAT 2014
Country/TerritoryAustralia
CitySydney, NSW
Period2/07/144/07/14

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