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

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

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

4 Sitaatiot (Scopus)
214 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Otsikko3rd European Conference on Unsaturated Soils – E-UNSAT 2016
KustantajaEDP Sciences
Sivumäärä6
DOI - pysyväislinkit
TilaJulkaistu - 12 syysk. 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaEuropean Conference on Unsaturated Soils - École des Ponts ParisTech (ENPC), Paris, Ranska
Kesto: 12 syysk. 201614 syysk. 2016
Konferenssinumero: 3
http://eunsat2016.sciencesconf.org/

Julkaisusarja

NimiE3S Web of Conferences
Vuosikerta9
ISSN (elektroninen)2267-1242

Conference

ConferenceEuropean Conference on Unsaturated Soils
LyhennettäE-UNSAT
Maa/AlueRanska
KaupunkiParis
Ajanjakso12/09/201614/09/2016
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