Influence of supplementary cementitious materials on the properties of concrete for secondary protection barrier in radioactive waste repositories

0488521 - ÚACH 2019 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Koťátková, J. - Čáchová, M. - Bezdička, Petr - Vejmelková, E. - Konvalinka, P. - Zemanová, L. - Černý, R.
Influence of supplementary cementitious materials on the properties of concrete for secondary protection barrier in radioactive waste repositories.
Key Engineering Materials. Vol. 760. Zurich: Trans Tech Publications, 2018, s. 96-101. ISSN 1662-9795.
[Special Concrete and Composites 2017 /14./. Lísek (CZ), 10.10.2017-11.10.2017]
Grant CEP: GA ČR(CZ) GA17-11635S
Institucionální podpora: RVO:61388980
Klíčová slova: Basic physical properties * Mechanical properties * Repository * Secondary protection barrier * Supplementary cementitious materials * Thermal properties
Obor OECD: Inorganic and nuclear chemistry

The paper studies the basic physical, mechanical and thermal properties of concrete with three types of supplementary materials for use in waste repositories. The used supplementary materials were natural zeolite, brick dust and metashale. These have pozzolanic properties which modify the parameters of resulting matrix and the unreacted part of the material offers sites for sorption of hazardous species. Results showed rather negative influence of natural zeolite on compressive strength and porosity, as well as thermal properties when compared to brick dust and metashale.
Trvalý link: http://hdl.handle.net/11104/0283103