Počet záznamů: 1
Effect of cyclic wetting and drying on microstructure, composition and length changes of lime-based plasters
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SYSNO ASEP 0508679 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of cyclic wetting and drying on microstructure, composition and length changes of lime-based plasters Tvůrce(i) Jerman, M. (CZ)
Scheinherrová, L. (CZ)
Medveď, I. (CZ)
Krejsová, J. (CZ)
Doleželová, M. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Černý, R. (CZ)Celkový počet autorů 7 Číslo článku 103411 Zdroj.dok. Cement and Concrete Composites. - : Elsevier - ISSN 0958-9465
Roč. 104, NOV (2019)Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Composition ; Drying ; Length changes ; Lime plasters ; Microstructure ; Wetting Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry Způsob publikování Omezený přístup Institucionální podpora UACH-T - RVO:61388980 UT WOS 000501649500073 EID SCOPUS 85071874804 DOI 10.1016/j.cemconcomp.2019.103411 Anotace Plasters as surface layers of building structures are often exposed to cyclic wetting and drying during their service life. In this paper, the impact of cyclic wetting and drying on microstructure, composition, and length changes of lime-based plasters is investigated using mercury intrusion porosimetry, optical microscopy, qualitative and quantitative X-ray diffraction analysis, simultaneous thermal analysis, and contact dilatometry. Lime-cement- and lime-metakaolin plasters as typical representatives of this group are saturated by water at first and then subjected to five consecutive drying-wetting cycles. Hydration processes, together with carbonation and possible partial dissolution of portlandite and calcite after immersion of samples in water, are identified as the most important reactions affecting the microstructure and composition of the lime-cement plaster, while for the lime-metakaolin plaster the pozzolanic reaction resulting in monocarbonate production, together with possible portlandite and calcite dissolution, are probably the most significant factors. The measurements of hygric strain show that the wetting-drying process is near-reversible since the beginning of the second cycle, whereas capillary pressure is the dominant shrinkage/swelling mechanism. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0299516
Počet záznamů: 1