Coupled Hydro-Mechanical Model of Bentonite Hydration and Swelling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F16%3A00000895" target="_blank" >RIV/46747885:24620/16:00000895 - isvavai.cz</a>

Výsledek na webu

<a href="http://stacks.iop.org/1755-1315/44/i=3/a=032024" target="_blank" >http://stacks.iop.org/1755-1315/44/i=3/a=032024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/http://dx.doi.org/10.1088/1755-1315/44/3/032024" target="_blank" >http://dx.doi.org/10.1088/1755-1315/44/3/032024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coupled Hydro-Mechanical Model of Bentonite Hydration and Swelling

Popis výsledku v původním jazyce

This paper deals with the modelling of coupled hydro-mechanical processes at the buffer and host rock interface (bentonite and granite) in the context of the safe disposal of spent nuclear fuel. Granite, as one of the barriers, includes fractures which are the source for hydration of bentonite and its subsequent swelling. It affects the mechanical behaviour and possibly the stability of the whole system. A non-linear solution for the stress-deformation problem with swelling was developed. This solution is coupled with the non-linear diffusion problem (for unsaturated flow). The swelling is defined using a coefficient dependent on water content according to literature data, with the effective Young's modulus decreasing close to zero corresponding to the plastic state. Results confirm the expected non-uniform saturation, swelling, and stresses in bentonite and small contribution to a fracture displacement.

Název v anglickém jazyce

Coupled Hydro-Mechanical Model of Bentonite Hydration and Swelling

Popis výsledku anglicky

This paper deals with the modelling of coupled hydro-mechanical processes at the buffer and host rock interface (bentonite and granite) in the context of the safe disposal of spent nuclear fuel. Granite, as one of the barriers, includes fractures which are the source for hydration of bentonite and its subsequent swelling. It affects the mechanical behaviour and possibly the stability of the whole system. A non-linear solution for the stress-deformation problem with swelling was developed. This solution is coupled with the non-linear diffusion problem (for unsaturated flow). The swelling is defined using a coefficient dependent on water content according to literature data, with the effective Young's modulus decreasing close to zero corresponding to the plastic state. Results confirm the expected non-uniform saturation, swelling, and stresses in bentonite and small contribution to a fracture displacement.

Druh

D - Stať ve sborníku

CEP obor

DH - Báňský průmysl včetně těžby a zpracování uhlí

OECD FORD obor

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Projekt

<a href="/cs/project/LO1201" target="_blank" >LO1201: ROZVOJ ÚSTAVU PRO NANOMATERIÁLY, POKROČILÉ TECHNOLOGIE A INOVACE TECHNICKÉ UNIVERZITY V LIBERCI</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IOP Conference Series: Earth and Environmental Science

ISBN

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ISSN

1755-1307

e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

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Místo vydání

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Místo konání akce

Praha

Datum konání akce

1. 1. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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