Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case

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

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Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case. / Perko, Janez; Seetharam, Suresh; Jacques, Diederik; Mallants, Dirk; Cool, Wim; Vermariën, Elise; Govaerts, Joan (Peer reviewer).

Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD). United States, 2013. p. 1-10.

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

Harvard

Perko, J, Seetharam, S, Jacques, D, Mallants, D, Cool, W, Vermariën, E & Govaerts, J 2013, Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case. in Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD). United States, pp. 1-10, ICEM 2013 - 15th International Conference On Environmental Remediation And Radioactive Waste Management, Brussels, Belgium, 2013-09-08.

APA

Perko, J., Seetharam, S., Jacques, D., Mallants, D., Cool, W., Vermariën, E., & Govaerts, J. (2013). Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case. In Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD) (pp. 1-10). United States.

Vancouver

Perko J, Seetharam S, Jacques D, Mallants D, Cool W, Vermariën E et al. Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case. In Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD). United States. 2013. p. 1-10

Author

Perko, Janez ; Seetharam, Suresh ; Jacques, Diederik ; Mallants, Dirk ; Cool, Wim ; Vermariën, Elise ; Govaerts, Joan. / Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case. Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD). United States, 2013. pp. 1-10

Bibtex - Download

@inproceedings{910930c2d88e46f28460e20299943437,
title = "Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case",
abstract = "In large cement-based structures such as a near surface disposal facility for radioactive waste voids and cracks are inevitable. Cracks facilitate preferential water flow through the facility because their saturated hydraulic conductivity is generally higher than the conductivity of the cementitious matrix. Moreover, sorption within the crack is expected to be lower than in the matrix and hence cracks in engineered barriers can act as a bypass for radionuclides.Understanding the effects of crack characteristics on contaminant fluxes from the facility is of utmost importance in a safety assessment. In this paper we numerically studied radionuclide leaching from a crack-containing cementitious containment system. The effect of cracks on radionuclide fluxes is assessed for a single repository component which contains a radionuclide source. These analyses reveal the influence of cracks on radionuclide release from the source. The second set of calculations deals with the safety assessment results for the planned near-surface disposal facility for low-level radioactive waste in Dessel (Belgium); our focus is on the analysis of total system behaviour in regards to release of radionuclide fluxes from the facility. Simulation results are interpreted through a complementary safety indicator.We discuss the possible consequences from different scenarios ofcracks and voids.",
keywords = "cracks, engineered barrier, near-surface disposal, cAt, safety assessment",
author = "Janez Perko and Suresh Seetharam and Diederik Jacques and Dirk Mallants and Wim Cool and Elise Vermari{\"e}n and Joan Govaerts",
note = "Score = 3",
year = "2013",
month = "9",
language = "English",
pages = "1--10",
booktitle = "Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD)",

}

RIS - Download

TY - GEN

T1 - Influence of cracks in cementitious engineered barriers in a near-surface disposal system: assessment analysis of the Belgian case

AU - Perko, Janez

AU - Seetharam, Suresh

AU - Jacques, Diederik

AU - Mallants, Dirk

AU - Cool, Wim

AU - Vermariën, Elise

A2 - Govaerts, Joan

N1 - Score = 3

PY - 2013/9

Y1 - 2013/9

N2 - In large cement-based structures such as a near surface disposal facility for radioactive waste voids and cracks are inevitable. Cracks facilitate preferential water flow through the facility because their saturated hydraulic conductivity is generally higher than the conductivity of the cementitious matrix. Moreover, sorption within the crack is expected to be lower than in the matrix and hence cracks in engineered barriers can act as a bypass for radionuclides.Understanding the effects of crack characteristics on contaminant fluxes from the facility is of utmost importance in a safety assessment. In this paper we numerically studied radionuclide leaching from a crack-containing cementitious containment system. The effect of cracks on radionuclide fluxes is assessed for a single repository component which contains a radionuclide source. These analyses reveal the influence of cracks on radionuclide release from the source. The second set of calculations deals with the safety assessment results for the planned near-surface disposal facility for low-level radioactive waste in Dessel (Belgium); our focus is on the analysis of total system behaviour in regards to release of radionuclide fluxes from the facility. Simulation results are interpreted through a complementary safety indicator.We discuss the possible consequences from different scenarios ofcracks and voids.

AB - In large cement-based structures such as a near surface disposal facility for radioactive waste voids and cracks are inevitable. Cracks facilitate preferential water flow through the facility because their saturated hydraulic conductivity is generally higher than the conductivity of the cementitious matrix. Moreover, sorption within the crack is expected to be lower than in the matrix and hence cracks in engineered barriers can act as a bypass for radionuclides.Understanding the effects of crack characteristics on contaminant fluxes from the facility is of utmost importance in a safety assessment. In this paper we numerically studied radionuclide leaching from a crack-containing cementitious containment system. The effect of cracks on radionuclide fluxes is assessed for a single repository component which contains a radionuclide source. These analyses reveal the influence of cracks on radionuclide release from the source. The second set of calculations deals with the safety assessment results for the planned near-surface disposal facility for low-level radioactive waste in Dessel (Belgium); our focus is on the analysis of total system behaviour in regards to release of radionuclide fluxes from the facility. Simulation results are interpreted through a complementary safety indicator.We discuss the possible consequences from different scenarios ofcracks and voids.

KW - cracks

KW - engineered barrier

KW - near-surface disposal

KW - cAt

KW - safety assessment

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_131165

UR - http://knowledgecentre.sckcen.be/so2/bibref/10568

M3 - In-proceedings paper

SP - 1

EP - 10

BT - Proceedings of the 15th International Conference on Environmental Remediation and Radioactive Waste Management - ICEM2013 (on CD)

CY - United States

ER -

ID: 249152