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Mechanical and thermal properties of concrete suitable for radioactive waste disposal sites
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SYSNO ASEP 0492678 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Mechanical and thermal properties of concrete suitable for radioactive waste disposal sites Author(s) Vejmelková, E. (CZ)
Čáchová, M. (CZ)
Scheinherrová, L. (CZ)
Konvalinka, P. (CZ)
Keppert, M. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Černý, R. (CZ)Number of authors 7 Article number 012061 Source Title IOP Conference Series: Materials Science and Engineering, 385. - Bristol : IOP Publishing, 2018 - ISSN 1757-8981 Number of pages 7 s. Publication form Online - E Action Construmat /24./ Event date 13.06.2018 - 15.06.2018 VEvent location Herľany Country SK - Slovakia Event type EUR Language eng - English Country GB - United Kingdom Keywords Geological repositories ; Porosity ; Radioactive waste disposal ; Radioactive wastes Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects GA17-11635S GA ČR - Czech Science Foundation (CSF) Institutional support UACH-T - RVO:61388980 EID SCOPUS 85051388769 DOI 10.1088/1757-899X/385/1/012061 Annotation Secondary casing as a part of a multi-barrier system serves to meet the safety requirements on the radioactive waste repositories. Such casing needs to be durable, radiation- and thermal resistant, with good mechanical properties, these requirements are fulfilled by concrete. However, the casing should also serve as a barrier limiting the leaching of radionuclides, in case of failure of primary package. This problem is addressed in the article by the addition of a sorption material (natural zeolite rock) in the concrete mixture. Mechanical and thermal properties of concrete containing different amount of natural zeolite rock are studied with the link to concrete porosity. The addition of natural zeolite is found to cause a decrease in thermal conductivity and specific heat capacity. Both compressive and flexural strength decrease as well when natural zeolite is added in the mixture, which correlates with the increase of open porosity of studied concrete mixtures. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2019
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