On the volumetric response of a compacted clay subjected to wetting and drying cycles

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Abstract

Experimental evidence on the volumetric response of a compacted clay was collected in controlled suction oedometric tests, with the aim to assess the volumetric response of this soil when subjected to wetting and drying cycles. The overall soil behaviour seems mainly to depend on the double structural arrangement observed in the compacted specimens. Selected results are presented and discussed focusing on the influence of the stress history on the volumetric response. Test results are simulated by a double-structure suction-dependent elasto-plastic constitutive model, in which the mechanical response is related to micro and macrostructural deformations and their mutual interactions. The procedure used to derive elastic and plastic constitutive parameters is presented along with the adopted simplifying assumptions. The comparison between simulations and experimental results is quite good and it also results satisfactory for the test that was not included in the calibration procedure.
Lingua originaleEnglish
Numero di pagine6
Stato di pubblicazionePublished - 2009

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Wetting
Drying
Clay
Plastics
Soils
Constitutive models
Calibration

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title = "On the volumetric response of a compacted clay subjected to wetting and drying cycles",
abstract = "Experimental evidence on the volumetric response of a compacted clay was collected in controlled suction oedometric tests, with the aim to assess the volumetric response of this soil when subjected to wetting and drying cycles. The overall soil behaviour seems mainly to depend on the double structural arrangement observed in the compacted specimens. Selected results are presented and discussed focusing on the influence of the stress history on the volumetric response. Test results are simulated by a double-structure suction-dependent elasto-plastic constitutive model, in which the mechanical response is related to micro and macrostructural deformations and their mutual interactions. The procedure used to derive elastic and plastic constitutive parameters is presented along with the adopted simplifying assumptions. The comparison between simulations and experimental results is quite good and it also results satisfactory for the test that was not included in the calibration procedure.",
keywords = "microstructure, modelling, suction cycles, unsaturated compacted clay, volumetric strains",
author = "Alessio Ferrari and {Airo' Farulla}, Camillo",
year = "2009",
language = "English",

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TY - CONF

T1 - On the volumetric response of a compacted clay subjected to wetting and drying cycles

AU - Ferrari, Alessio

AU - Airo' Farulla, Camillo

PY - 2009

Y1 - 2009

N2 - Experimental evidence on the volumetric response of a compacted clay was collected in controlled suction oedometric tests, with the aim to assess the volumetric response of this soil when subjected to wetting and drying cycles. The overall soil behaviour seems mainly to depend on the double structural arrangement observed in the compacted specimens. Selected results are presented and discussed focusing on the influence of the stress history on the volumetric response. Test results are simulated by a double-structure suction-dependent elasto-plastic constitutive model, in which the mechanical response is related to micro and macrostructural deformations and their mutual interactions. The procedure used to derive elastic and plastic constitutive parameters is presented along with the adopted simplifying assumptions. The comparison between simulations and experimental results is quite good and it also results satisfactory for the test that was not included in the calibration procedure.

AB - Experimental evidence on the volumetric response of a compacted clay was collected in controlled suction oedometric tests, with the aim to assess the volumetric response of this soil when subjected to wetting and drying cycles. The overall soil behaviour seems mainly to depend on the double structural arrangement observed in the compacted specimens. Selected results are presented and discussed focusing on the influence of the stress history on the volumetric response. Test results are simulated by a double-structure suction-dependent elasto-plastic constitutive model, in which the mechanical response is related to micro and macrostructural deformations and their mutual interactions. The procedure used to derive elastic and plastic constitutive parameters is presented along with the adopted simplifying assumptions. The comparison between simulations and experimental results is quite good and it also results satisfactory for the test that was not included in the calibration procedure.

KW - microstructure

KW - modelling

KW - suction cycles

KW - unsaturated compacted clay

KW - volumetric strains

UR - http://hdl.handle.net/10447/42242

M3 - Other

ER -