Inclusion of chemical effect in a fully coupled THM finite element code

Ayman Abed, Wojciech Tomasz Sołowski, Enrique Romero, Antonio Gens

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

2 Lataukset (Pure)


Bentonite-rich clays can be used as a buffer / backfill material in deep geological repositories for nuclear waste. The prediction of the long-term performance of a buffer / backfill in such a complex environment, where the temperature, humidity and chemistry of water change, requires a fully thermo-hydro-mechanical-chemical (THMC) coupled numerical code. This paper presents a simple extension of a THM coupled finite element code to include chemical effects. After deriving the governing salt mass balance equation and discussing its implementation into the code, the paper verifies the extended framework against analytical solution for 1D salt transport. In addition, the article presents a validation example in which the code replicates experimental data. The numerical results obtained from the extended THMC coupled finite element code encourage further investigation of the chemical effects on the mechanical and thermal behaviour of the material. That would serve the ultimate goal of achieving a safer design of the nuclear waste storage facility.
OtsikkoUnsaturated Soils
ToimittajatCharles Ng, Anthony Leung, Abraham Chiu, Chao Zhou
JulkaisupaikkaHong Kong
KustantajaThe Hong Kong University of Science and Technology
ISBN (painettu)978-988-78037-3-7, 978-988-14032-2-3
TilaJulkaistu - 2018
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Conference on Unsaturated Soils - Hong Kong, Hongkong
Kesto: 3 elokuuta 20185 elokuuta 2018
Konferenssinumero: 7


ConferenceInternational Conference on Unsaturated Soils
KaupunkiHong Kong

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