Počet záznamů: 1
Microstructural and micro-mechanical property changes of cement pastes for ILW immobilization due to irradiation
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SYSNO ASEP 0531481 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Microstructural and micro-mechanical property changes of cement pastes for ILW immobilization due to irradiation Tvůrce(i) Zatloukalová, J. (CZ)
Dewynter-Marty, V. (FR)
Zatloukal, J. (CZ)
Kolář, K. (CZ)
Bernachy-Barbe, F. (FR)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Konvalinka, J. (CZ)Celkový počet autorů 7 Číslo článku 152346 Zdroj.dok. Journal of Nuclear Materials. - : Elsevier - ISSN 0022-3115
Roč. 540, NOV (2020)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova gamma irradiation ; microstructure ; concrete Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry Způsob publikování Omezený přístup Institucionální podpora UACH-T - RVO:61388980 UT WOS 000575163800010 EID SCOPUS 85088640464 DOI 10.1016/j.jnucmat.2020.152346 Anotace While degradation of concrete due to irradiation is a widely studied subject, the deterioration and changes in microstructure of cement pastes immobilizing evaporator concentrates due to gamma radiation is a very specific subject because of the nature of the solidified radioactive waste. The cement paste proposed as possibly suitable binder for cementitious composites immobilizing evaporator concentrates (marked as NP in further text), a paste with the same composition but mixed with simulated evaporator concentrates (NP_C) and a reference paste (PC) were subjected to gamma irradiation from Co-60 source at doses of 2 MGy and studied in terms of microstructure changes using Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDX), X-ray diffraction (XRD) and nanoindentation. SEM-EDX revealed rise of new phases on the NP_C samples rich in Na+ compounds due to the irradiation. Results from nanoindentation indicated a formation of carbonates in the irradiated samples, but XRD analysis did not find a significant rise in CaCO3 minerals. The possible explanation is a rise of alkali carbonates in their amorphous form. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2021 Elektronická adresa https://doi.org/10.1016/j.jnucmat.2020.152346
Počet záznamů: 1