Hydro-mechanical modelling of MX-80 bentonite: one dimensional study

Ayman A. Abed, Mika Laitinen, Joni Lämsä, Tero Harjupatana, Wojciech T. Sołowski, Markku Kataja

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

4 Citations (Scopus)
181 Downloads (Pure)

Abstract

As a first step towards modelling the coupled Thermo-Hydro-Mechanical-Chemical (THMC) behaviour of bentonite, the Barcelona Basic Model (BBM) has been implemented into Numerrin finite element code. This model has been fully coupled with the single phase flow equation for unsaturated soils which models liquid water transport. Suction obtained from solving the flow equation is used as an input for the BBM model and the volumetric deformations from the mechanical analysis are used to update the pore water pressure field. As an alternative, BBM is used alongside the Kröhn’s model which assumes that bentonite re-saturation is mainly driven by water vapour diffusion. The paper simulates one dimensional infiltration test on MX-80 bentonite with both implemented models for water transport and compares the results with those from a laboratory experiments based on X-ray tomography.The numerical results of the simulations are similar despite taking into account different physical phenomena.
Original languageEnglish
Title of host publication3rd European Conference on Unsaturated Soils – E-UNSAT 2016
PublisherEDP SCIENCES
Number of pages6
DOIs
Publication statusPublished - 12 Sep 2016
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Unsaturated Soils - École des Ponts ParisTech (ENPC), Paris, France
Duration: 12 Sep 201614 Sep 2016
Conference number: 3
http://eunsat2016.sciencesconf.org/

Publication series

NameE3S Web of Conferences
Volume9
ISSN (Electronic)2267-1242

Conference

ConferenceEuropean Conference on Unsaturated Soils
Abbreviated titleE-UNSAT
CountryFrance
CityParis
Period12/09/201614/09/2016
Internet address

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