Updated state-of-the-art on THM behaviour of i) buffer clay materials and of ii) host clay formations: EURAD - D7.2

Maria Victoria Villar; Pierre Besuelle; Katerina Cernochova; Frédéric Collin; James Cuevas; Robert Cuss; Christophe de Lesquen; Arnaud Dizier; Ginger El Tabbal; Antonio Gens; Natalia Gimeno; Caroline Graham; Dragan Grgic; Jon Harrington; Christophe Imbert; Vlastislav Kašpar; Stephan Kaufhold; Olivier X. Leupin; Séverine Levasseur; David Masin; Jan Najser; Asta Narkuniene; Markus Ollin; Heini Reijonen; Šárka Šachlová; Sergey Sayenko; Eric Simo; Daniel Svensson; Jiri Svoboda; Alexandru Tatomir; Gianni Vettese; Janne Yliharju; Borys Zoblenko

Updated state-of-the-art on THM behaviour of i) buffer clay materials and of ii) host clay formations: EURAD - D7.2

Maria Victoria Villar
, Pierre Besuelle
, Katerina Cernochova
, Frédéric Collin
, James Cuevas
, Robert Cuss
, Christophe de Lesquen
, Arnaud Dizier
, Ginger El Tabbal
, Antonio Gens
, Natalia Gimeno
, Caroline Graham
, Dragan Grgic
, Jon Harrington
, Christophe Imbert
, Vlastislav Kašpar
, Stephan Kaufhold
, Olivier X. Leupin
, Séverine Levasseur
, David Masin

Jan Najser, Asta Narkuniene, Markus Ollin, Heini Reijonen, Šárka Šachlová, Sergey Sayenko, Eric Simo, Daniel Svensson, Jiri Svoboda, Alexandru Tatomir, Gianni Vettese, Janne Yliharju, Borys Zoblenko

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Abstract

The EURAD-HITEC project investigated the effects of elevated temperatures (above 100°C) on clay host rocks and buffer materials used in radioactive waste repositories. Current safety cases often limit temperatures to 100°C in the buffer and 90°C in the host rock, but tolerating higher temperatures could improve repository designs. Three clay formations (Boom Clay, Callovo-Oxfordian claystone, and Opalinus Clay) and two types of bentonites (Wyoming-type and divalent bentonites) were studied to assess their performance under higher temperatures. This updated state-of-the art summarises the main key findings relevant to this work package in terms of thermo-hydro-mechanical behaviour for the buffer and the geological host formation.

Original language	English
Publisher	EURAD - European Joint Programme on Radioactive Waste Management
Number of pages	128
State	Published - 1 Jun 2024

Publication series

Name	EURAD Reports
Publisher	EURAD
No.	EURAD-D7.2

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EURAD - D7.2 Updated state-of-the-art on THM behaviour of i) buffer clay materials and of ii) host clay formations.pdfFinal published version, 7.93 MBLicense: Other

Cite this

Villar, M. V., Besuelle, P., Cernochova, K., Collin, F., Cuevas, J., Cuss, R., de Lesquen, C., Dizier, A., El Tabbal, G., Gens, A., Gimeno, N., Graham, C., Grgic, D., Harrington, J., Imbert, C., Kašpar, V., Kaufhold, S., Leupin, O. X., Levasseur, S., ... Zoblenko, B. (2024). Updated state-of-the-art on THM behaviour of i) buffer clay materials and of ii) host clay formations: EURAD - D7.2. (EURAD Reports; No. EURAD-D7.2). EURAD - European Joint Programme on Radioactive Waste Management.

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abstract = "The EURAD-HITEC project investigated the effects of elevated temperatures (above 100°C) on clay host rocks and buffer materials used in radioactive waste repositories. Current safety cases often limit temperatures to 100°C in the buffer and 90°C in the host rock, but tolerating higher temperatures could improve repository designs. Three clay formations (Boom Clay, Callovo-Oxfordian claystone, and Opalinus Clay) and two types of bentonites (Wyoming-type and divalent bentonites) were studied to assess their performance under higher temperatures. This updated state-of-the art summarises the main key findings relevant to this work package in terms of thermo-hydro-mechanical behaviour for the buffer and the geological host formation.",

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Villar, MV, Besuelle, P, Cernochova, K, Collin, F, Cuevas, J, Cuss, R, de Lesquen, C, Dizier, A, El Tabbal, G, Gens, A, Gimeno, N, Graham, C, Grgic, D, Harrington, J, Imbert, C, Kašpar, V, Kaufhold, S, Leupin, OX, Levasseur, S, Masin, D, Najser, J, Narkuniene, A, Ollin, M, Reijonen, H, Šachlová, Š, Sayenko, S, Simo, E, Svensson, D, Svoboda, J, Tatomir, A, Vettese, G, Yliharju, J & Zoblenko, B 2024, Updated state-of-the-art on THM behaviour of i) buffer clay materials and of ii) host clay formations: EURAD - D7.2. EURAD Reports, no. EURAD-D7.2, EURAD - European Joint Programme on Radioactive Waste Management.

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AU - Cernochova, Katerina

AU - Collin, Frédéric

AU - Cuevas, James

AU - Cuss, Robert

AU - de Lesquen, Christophe

AU - Dizier, Arnaud

AU - El Tabbal, Ginger

AU - Gens, Antonio

AU - Gimeno, Natalia

AU - Graham, Caroline

AU - Grgic, Dragan

AU - Harrington, Jon

AU - Imbert, Christophe

AU - Kašpar, Vlastislav

AU - Kaufhold, Stephan

AU - Leupin, Olivier X.

AU - Levasseur, Séverine

AU - Masin, David

AU - Najser, Jan

AU - Narkuniene, Asta

AU - Ollin, Markus

AU - Reijonen, Heini

AU - Šachlová, Šárka

AU - Sayenko, Sergey

AU - Simo, Eric

AU - Svensson, Daniel

AU - Svoboda, Jiri

AU - Tatomir, Alexandru

AU - Vettese, Gianni

AU - Yliharju, Janne

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N2 - The EURAD-HITEC project investigated the effects of elevated temperatures (above 100°C) on clay host rocks and buffer materials used in radioactive waste repositories. Current safety cases often limit temperatures to 100°C in the buffer and 90°C in the host rock, but tolerating higher temperatures could improve repository designs. Three clay formations (Boom Clay, Callovo-Oxfordian claystone, and Opalinus Clay) and two types of bentonites (Wyoming-type and divalent bentonites) were studied to assess their performance under higher temperatures. This updated state-of-the art summarises the main key findings relevant to this work package in terms of thermo-hydro-mechanical behaviour for the buffer and the geological host formation.

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KW - Boom Clay

KW - EURAD WP HITEC

KW - Finite element modelling

KW - Thermo-hydro-mechanics

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