An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays

Liliana Gramegna; Ayman A. Abed; Wojciech T. Sołowski; Guido Musso; Gabriele Della Vecchia

doi:10.1007/978-3-031-34761-0_38

An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays

Liliana Gramegna^*, Ayman A. Abed, Wojciech T. Sołowski, Guido Musso, Gabriele Della Vecchia

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

The mechanical behaviour of clays is significantly influenced by their salinity and degree of saturation, which are expected to change in both natural and anthropogenic environments. This influence is triggered by fabric changes. Capillary forces, related to changes in the degree of saturation, and electrochemical interactions, related to changes in salinity, affect differently the interaction between particles. However, at the continuum scale, it is possible to pinpoint some common characteristics. This paper focuses on the modelling capabilities of an elasto-plastic framework formulated to reproduce the behaviour of unsaturated non-expansive clays exposed to changes in matric and osmotic suction, by introducing osmotic suction on BBM-like models in terms of its effects on the normal compression line. The model, calibrated on experimental data on Boom clay (Mokni et al., 2014) and remoulded loess (Zhang et al., 2022), has been implemented in the Thebes code and used to predict material response under selected chemo-hydro-mechanical paths.

Original language	English
Title of host publication	Geotechnical Engineering in the Digital and Technological Innovation Era
Editors	Alessio Ferrari, Marco Rosone, Maurizio Ziccarelli, Alessio Ferrari, Guido Gottardi
Publisher	Springer
Pages	311-318
Number of pages	8
ISBN (Electronic)	978-3-031-34761-0
ISBN (Print)	978-3-031-34760-3
DOIs	https://doi.org/10.1007/978-3-031-34761-0_38
Publication status	Published - 2023
MoE publication type	A4 Conference publication
Event	Italian National Conference of the Researchers of Geotechnical Engineering - Palermo, Italy Duration: 5 Jul 2023 → 7 Jul 2023 Conference number: 8

Publication series

Name	Springer Series in Geomechanics and Geoengineering
ISSN (Print)	1866-8755
ISSN (Electronic)	1866-8763

Conference

Conference	Italian National Conference of the Researchers of Geotechnical Engineering
Abbreviated title	CNRIG
Country/Territory	Italy
City	Palermo
Period	05/07/2023 → 07/07/2023

Keywords

Clay fabric
Constitutive law
Matric suction
Non-expansive clay
Osmotic suction

Access to Document

10.1007/978-3-031-34761-0_38

Cite this

Gramegna, L., Abed, A. A., Sołowski, W. T., Musso, G., & Della Vecchia, G. (2023). An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays. In A. Ferrari, M. Rosone, M. Ziccarelli, A. Ferrari, & G. Gottardi (Eds.), Geotechnical Engineering in the Digital and Technological Innovation Era (pp. 311-318). (Springer Series in Geomechanics and Geoengineering). Springer. https://doi.org/10.1007/978-3-031-34761-0_38

Gramegna, Liliana ; Abed, Ayman A. ; Sołowski, Wojciech T. et al. / An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays. Geotechnical Engineering in the Digital and Technological Innovation Era. editor / Alessio Ferrari ; Marco Rosone ; Maurizio Ziccarelli ; Alessio Ferrari ; Guido Gottardi. Springer, 2023. pp. 311-318 (Springer Series in Geomechanics and Geoengineering).

@inproceedings{baafdbe90c414ef4a4ad1b9ed3ed181b,

title = "An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays",

abstract = "The mechanical behaviour of clays is significantly influenced by their salinity and degree of saturation, which are expected to change in both natural and anthropogenic environments. This influence is triggered by fabric changes. Capillary forces, related to changes in the degree of saturation, and electrochemical interactions, related to changes in salinity, affect differently the interaction between particles. However, at the continuum scale, it is possible to pinpoint some common characteristics. This paper focuses on the modelling capabilities of an elasto-plastic framework formulated to reproduce the behaviour of unsaturated non-expansive clays exposed to changes in matric and osmotic suction, by introducing osmotic suction on BBM-like models in terms of its effects on the normal compression line. The model, calibrated on experimental data on Boom clay (Mokni et al., 2014) and remoulded loess (Zhang et al., 2022), has been implemented in the Thebes code and used to predict material response under selected chemo-hydro-mechanical paths.",

keywords = "Clay fabric, Constitutive law, Matric suction, Non-expansive clay, Osmotic suction",

author = "Liliana Gramegna and Abed, {Ayman A.} and So{\l}owski, {Wojciech T.} and Guido Musso and {Della Vecchia}, Gabriele",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.; Italian National Conference of the Researchers of Geotechnical Engineering, CNRIG ; Conference date: 05-07-2023 Through 07-07-2023",

year = "2023",

doi = "10.1007/978-3-031-34761-0_38",

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pages = "311--318",

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Gramegna, L, Abed, AA, Sołowski, WT, Musso, G & Della Vecchia, G 2023, An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays. in A Ferrari, M Rosone, M Ziccarelli, A Ferrari & G Gottardi (eds), Geotechnical Engineering in the Digital and Technological Innovation Era. Springer Series in Geomechanics and Geoengineering, Springer, pp. 311-318, Italian National Conference of the Researchers of Geotechnical Engineering, Palermo, Italy, 05/07/2023. https://doi.org/10.1007/978-3-031-34761-0_38

An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays. / Gramegna, Liliana; Abed, Ayman A.; Sołowski, Wojciech T. et al.
Geotechnical Engineering in the Digital and Technological Innovation Era. ed. / Alessio Ferrari; Marco Rosone; Maurizio Ziccarelli; Alessio Ferrari; Guido Gottardi. Springer, 2023. p. 311-318 (Springer Series in Geomechanics and Geoengineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays

AU - Gramegna, Liliana

AU - Abed, Ayman A.

AU - Sołowski, Wojciech T.

AU - Musso, Guido

AU - Della Vecchia, Gabriele

N1 - Conference code: 8

PY - 2023

Y1 - 2023

N2 - The mechanical behaviour of clays is significantly influenced by their salinity and degree of saturation, which are expected to change in both natural and anthropogenic environments. This influence is triggered by fabric changes. Capillary forces, related to changes in the degree of saturation, and electrochemical interactions, related to changes in salinity, affect differently the interaction between particles. However, at the continuum scale, it is possible to pinpoint some common characteristics. This paper focuses on the modelling capabilities of an elasto-plastic framework formulated to reproduce the behaviour of unsaturated non-expansive clays exposed to changes in matric and osmotic suction, by introducing osmotic suction on BBM-like models in terms of its effects on the normal compression line. The model, calibrated on experimental data on Boom clay (Mokni et al., 2014) and remoulded loess (Zhang et al., 2022), has been implemented in the Thebes code and used to predict material response under selected chemo-hydro-mechanical paths.

AB - The mechanical behaviour of clays is significantly influenced by their salinity and degree of saturation, which are expected to change in both natural and anthropogenic environments. This influence is triggered by fabric changes. Capillary forces, related to changes in the degree of saturation, and electrochemical interactions, related to changes in salinity, affect differently the interaction between particles. However, at the continuum scale, it is possible to pinpoint some common characteristics. This paper focuses on the modelling capabilities of an elasto-plastic framework formulated to reproduce the behaviour of unsaturated non-expansive clays exposed to changes in matric and osmotic suction, by introducing osmotic suction on BBM-like models in terms of its effects on the normal compression line. The model, calibrated on experimental data on Boom clay (Mokni et al., 2014) and remoulded loess (Zhang et al., 2022), has been implemented in the Thebes code and used to predict material response under selected chemo-hydro-mechanical paths.

KW - Clay fabric

KW - Constitutive law

KW - Matric suction

KW - Non-expansive clay

KW - Osmotic suction

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DO - 10.1007/978-3-031-34761-0_38

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AN - SCOPUS:85164696758

SN - 978-3-031-34760-3

T3 - Springer Series in Geomechanics and Geoengineering

SP - 311

EP - 318

BT - Geotechnical Engineering in the Digital and Technological Innovation Era

A2 - Ferrari, Alessio

A2 - Rosone, Marco

A2 - Ziccarelli, Maurizio

A2 - Ferrari, Alessio

A2 - Gottardi, Guido

PB - Springer

T2 - Italian National Conference of the Researchers of Geotechnical Engineering

Y2 - 5 July 2023 through 7 July 2023

ER -

Gramegna L, Abed AA, Sołowski WT, Musso G, Della Vecchia G. An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays. In Ferrari A, Rosone M, Ziccarelli M, Ferrari A, Gottardi G, editors, Geotechnical Engineering in the Digital and Technological Innovation Era. Springer. 2023. p. 311-318. (Springer Series in Geomechanics and Geoengineering). doi: 10.1007/978-3-031-34761-0_38

An Elastoplastic Framework Accounting for Changes in Matric and Osmotic Suction in Unsaturated Non-expansive Clays

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