Effects of relative humidity cycling on the hydro-mechanical behaviour of two clayey rocks from North-East Spain

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Title:	Effects of relative humidity cycling on the hydro-mechanical behaviour of two clayey rocks from North-East Spain
Author:	Pineda Jiménez, Jubert Andrés; Alonso Pérez de Agreda, Eduardo
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
Abstract:	The paper describes the results of an experimental research aimed at studying the effects of relative humidity cycling on the degradation phenomena of two clayey rocks from North-East Spain, with particular emphasis on peak shear strength, low-strain stiffness and water permeability. Undisturbed samples were subjected to an extreme relative humidity cycle (between 15% and 99%) using the vapour transfer technique, before performing triaxial compression and water permeability tests. Rock stiffness was evaluated by ultrasonic pulse tests. Test results showed clear differences in stiffness and shear strength response between undisturbed and degraded samples, highlighting the relevance of hydraulically induced degradation phenomena on this type of materials.
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques -Clay soils -Sòls argilosos
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Document type:	Article - Published version Conference Object
Published by:	CRC Press
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