Measuring hydraulic conductivity and swelling pressure under high hydraulic gradients

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00227234" target="_blank" >RIV/68407700:21110/14:00227234 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Measuring hydraulic conductivity and swelling pressure under high hydraulic gradients

Popis výsledku v původním jazyce

The concept of a deep geological repository for high-level waste in the Czech Republic is based on disposal in a granite environment. The construction of an engineered barrier between the rock and canister is considered, and compacted swelling clay (bentonite) is chosen as the most suitable material for such a barrier. The most important geotechnical properties of bentonite in this context are low hydraulic conductivity and high swelling pressure. Measuring these parameters in such a low-permeable material requires much time. This study focuses on combined measurements of hydraulic conductivity and swelling pressure and on the impact of using high hydraulic gradients that are consistent with possible porewater pressures in a deep repository. High hydraulic gradients may also quicken the determination of these parameters. Results show a decrease in hydraulic conductivity with increasing saturation pressure up to a threshold dry density, with no further change at higher dry densities. Th

Název v anglickém jazyce

Measuring hydraulic conductivity and swelling pressure under high hydraulic gradients

Popis výsledku anglicky

The concept of a deep geological repository for high-level waste in the Czech Republic is based on disposal in a granite environment. The construction of an engineered barrier between the rock and canister is considered, and compacted swelling clay (bentonite) is chosen as the most suitable material for such a barrier. The most important geotechnical properties of bentonite in this context are low hydraulic conductivity and high swelling pressure. Measuring these parameters in such a low-permeable material requires much time. This study focuses on combined measurements of hydraulic conductivity and swelling pressure and on the impact of using high hydraulic gradients that are consistent with possible porewater pressures in a deep repository. High hydraulic gradients may also quicken the determination of these parameters. Results show a decrease in hydraulic conductivity with increasing saturation pressure up to a threshold dry density, with no further change at higher dry densities. Th

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI1%2F362" target="_blank" >FR-TI1/362: Výzkum vlastností materiálů pro bezpečné ukládání radioaktivních odpadů a vývoj postupů jejich hodnocení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

CLAYS IN NATURAL AND ENGINEERED BARRIERS FOR RADIOACTIVE WASTE CONFINEMENT

ISBN

978-1-86239-654-8

ISSN

0305-8719

e-ISSN

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Počet stran výsledku

9

Strana od-do

293-301

Název nakladatele

Geological Society of London

Místo vydání

London

Místo konání akce

Montpellier

Datum konání akce

22. 10. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000345273400021