Thermo-hydro-mechanical behaviour of an expansive bentonite/silt mixture using different suction controlled techniques

Hossein Nowamooz, Roberto Gómez-Espina, Março Victoria Villar, Farimah Masrouri

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an experimental study on a bentonite/silt mixture using odometers with suction controlled either by the osmotic technique or by air overpressure at two different temperatures of 20° and 60°C in a suction range between 0 and 8 M Pa. The compression curves permitted us to interpret the influence of the temperature on the different yielding surfaces. The temperature increase rigidified the samples producing a significant increase of the preconsolidation stress. We observed that the compression curves at different imposed suctions converged toward the saturated state for the high applied vertical stresses. The stress from which the compression curves follow the saturated state is called the saturation pressure (P sat). The P sat values increased with the temperature increase.

Original languageEnglish
Title of host publicationUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Pages589-592
Number of pages4
Volume1
Publication statusPublished - 2011
Event5th International Conference on Unsaturated Soils - Barcelona, Spain
Duration: 6 Sep 20108 Sep 2010

Other

Other5th International Conference on Unsaturated Soils
Country/TerritorySpain
CityBarcelona
Period6/09/108/09/10

ASJC Scopus subject areas

  • Soil Science

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