An effective stress based shear strength criterion for unsaturated compacted double-porosity clays

Airò Farulla, C.

Risultato della ricerca: Paper

Abstract

An effective stress based shear strength criterion is proposed taking into account the fundamental effects of microstructure characteristics on retention properties of compacted double-porosity clays and their overall coupled hydro-mechanical behaviour. Results of triaxial compression tests carried out on saturated and unsaturated samples of a compacted scaly clay show that points representative of failure conditions depict a unique failure envelope when the macropore degree of saturation is used in the definition of the effective stress and its evolution with the suction is taken into account. Furthermore, the proposed criterion is very effective to consider the most relevant aspects of suction influence on the shear strength of double porosity unsaturated soils.
Lingua originaleEnglish
Stato di pubblicazionePublished - 2015

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Shear strength
Clay
Porosity
Soils
Microstructure

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abstract = "An effective stress based shear strength criterion is proposed taking into account the fundamental effects of microstructure characteristics on retention properties of compacted double-porosity clays and their overall coupled hydro-mechanical behaviour. Results of triaxial compression tests carried out on saturated and unsaturated samples of a compacted scaly clay show that points representative of failure conditions depict a unique failure envelope when the macropore degree of saturation is used in the definition of the effective stress and its evolution with the suction is taken into account. Furthermore, the proposed criterion is very effective to consider the most relevant aspects of suction influence on the shear strength of double porosity unsaturated soils.",
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T1 - An effective stress based shear strength criterion for unsaturated compacted double-porosity clays

AU - Airò Farulla, C.

AU - Airo' Farulla, Camillo

AU - Rosone, Marco

AU - Ferrari, Alessio

PY - 2015

Y1 - 2015

N2 - An effective stress based shear strength criterion is proposed taking into account the fundamental effects of microstructure characteristics on retention properties of compacted double-porosity clays and their overall coupled hydro-mechanical behaviour. Results of triaxial compression tests carried out on saturated and unsaturated samples of a compacted scaly clay show that points representative of failure conditions depict a unique failure envelope when the macropore degree of saturation is used in the definition of the effective stress and its evolution with the suction is taken into account. Furthermore, the proposed criterion is very effective to consider the most relevant aspects of suction influence on the shear strength of double porosity unsaturated soils.

AB - An effective stress based shear strength criterion is proposed taking into account the fundamental effects of microstructure characteristics on retention properties of compacted double-porosity clays and their overall coupled hydro-mechanical behaviour. Results of triaxial compression tests carried out on saturated and unsaturated samples of a compacted scaly clay show that points representative of failure conditions depict a unique failure envelope when the macropore degree of saturation is used in the definition of the effective stress and its evolution with the suction is taken into account. Furthermore, the proposed criterion is very effective to consider the most relevant aspects of suction influence on the shear strength of double porosity unsaturated soils.

UR - http://hdl.handle.net/10447/147616

M3 - Paper

ER -