Interaction Swelling Bitumen – Host Formation: Scoping Calculations

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Interaction Swelling Bitumen – Host Formation: Scoping Calculations. / Li, Xiang Ling; Bernier, Frédéric; Valcke, Elie.

Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX. Warrendale, United States, 2006. p. 751-758.

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review

Harvard

Li, XL, Bernier, F & Valcke, E 2006, Interaction Swelling Bitumen – Host Formation: Scoping Calculations. in Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX. Warrendale, United States, pp. 751-758, 29th symposium on the Scientific Basis of Nuclear Waste Management, Ghent, Belgium, 2005-09-12.

APA

Li, X. L., Bernier, F., & Valcke, E. (2006). Interaction Swelling Bitumen – Host Formation: Scoping Calculations. In Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX (pp. 751-758).

Vancouver

Li XL, Bernier F, Valcke E. Interaction Swelling Bitumen – Host Formation: Scoping Calculations. In Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX. Warrendale, United States. 2006. p. 751-758

Author

Li, Xiang Ling ; Bernier, Frédéric ; Valcke, Elie. / Interaction Swelling Bitumen – Host Formation: Scoping Calculations. Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX. Warrendale, United States, 2006. pp. 751-758

Bibtex - Download

@inproceedings{0f85f80a38d54564ad33d658690bc68a,
title = "Interaction Swelling Bitumen – Host Formation: Scoping Calculations",
abstract = "The Eurobitum bituminised waste product (BWP) from the former EUROCHEMIC reprocessing plant in Mol-Dessel (Belgium) contains a lot of salts, mainly NaNO3 and CaSO4. In contact with water in an underground repository, the dehydrated salts in the BWP will rehydrate, resulting in swelling and, possibly, a swelling pressure build-up. A high swelling pressure might impede the integrity and the safety of the repository by creation of preferential pathways for radionuclide migration. The interaction between the swelling BWP and the host formation depends on the hydromechanical behaviour of both. The hydromechanical constitutive law of Eurobitum is not yet established. We have therefore realised scoping calculations to assess the stress redistribution and deformation due to the recompression of the clay around a disposal gallery caused by a swelling pressure. Sensitivity studies have evidenced some important influencing factors. The convergence during the excavation of the disposal galleries is of primary importance for a safe waste disposal system design. The scoping calculations showed that the swelling pressure exercised to the host formation (Boom Clay) should be limited to 7 - 8 MPa. Beyond this limit, the risk of preferential paths in Boom Clay for radionuclide transport becomes very high.",
keywords = "host formation, bitumen, swelling",
author = "Li, {Xiang Ling} and Fr{\'e}d{\'e}ric Bernier and Elie Valcke",
note = "Score = 1; 29th symposium on the Scientific Basis of Nuclear Waste Management ; Conference date: 12-09-2005 Through 16-09-2005",
year = "2006",
month = jun,
language = "English",
isbn = "978-1-55899-889-6",
pages = "751--758",
booktitle = "Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX",

}

RIS - Download

TY - GEN

T1 - Interaction Swelling Bitumen – Host Formation: Scoping Calculations

AU - Li, Xiang Ling

AU - Bernier, Frédéric

AU - Valcke, Elie

N1 - Score = 1

PY - 2006/6

Y1 - 2006/6

N2 - The Eurobitum bituminised waste product (BWP) from the former EUROCHEMIC reprocessing plant in Mol-Dessel (Belgium) contains a lot of salts, mainly NaNO3 and CaSO4. In contact with water in an underground repository, the dehydrated salts in the BWP will rehydrate, resulting in swelling and, possibly, a swelling pressure build-up. A high swelling pressure might impede the integrity and the safety of the repository by creation of preferential pathways for radionuclide migration. The interaction between the swelling BWP and the host formation depends on the hydromechanical behaviour of both. The hydromechanical constitutive law of Eurobitum is not yet established. We have therefore realised scoping calculations to assess the stress redistribution and deformation due to the recompression of the clay around a disposal gallery caused by a swelling pressure. Sensitivity studies have evidenced some important influencing factors. The convergence during the excavation of the disposal galleries is of primary importance for a safe waste disposal system design. The scoping calculations showed that the swelling pressure exercised to the host formation (Boom Clay) should be limited to 7 - 8 MPa. Beyond this limit, the risk of preferential paths in Boom Clay for radionuclide transport becomes very high.

AB - The Eurobitum bituminised waste product (BWP) from the former EUROCHEMIC reprocessing plant in Mol-Dessel (Belgium) contains a lot of salts, mainly NaNO3 and CaSO4. In contact with water in an underground repository, the dehydrated salts in the BWP will rehydrate, resulting in swelling and, possibly, a swelling pressure build-up. A high swelling pressure might impede the integrity and the safety of the repository by creation of preferential pathways for radionuclide migration. The interaction between the swelling BWP and the host formation depends on the hydromechanical behaviour of both. The hydromechanical constitutive law of Eurobitum is not yet established. We have therefore realised scoping calculations to assess the stress redistribution and deformation due to the recompression of the clay around a disposal gallery caused by a swelling pressure. Sensitivity studies have evidenced some important influencing factors. The convergence during the excavation of the disposal galleries is of primary importance for a safe waste disposal system design. The scoping calculations showed that the swelling pressure exercised to the host formation (Boom Clay) should be limited to 7 - 8 MPa. Beyond this limit, the risk of preferential paths in Boom Clay for radionuclide transport becomes very high.

KW - host formation

KW - bitumen

KW - swelling

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_30979

UR - http://knowledgecentre.sckcen.be/so2/bibref/3541

M3 - In-proceedings paper

SN - 978-1-55899-889-6

SP - 751

EP - 758

BT - Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX

CY - Warrendale, United States

T2 - 29th symposium on the Scientific Basis of Nuclear Waste Management

Y2 - 12 September 2005 through 16 September 2005

ER -

ID: 203759