Počet záznamů: 1
Durability assessment of self-healing in ordinary Portland cement concrete containing chemical additives
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SYSNO ASEP 0545398 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Durability assessment of self-healing in ordinary Portland cement concrete containing chemical additives Tvůrce(i) Aspiotis, K. (GR)
Sotiriadis, Konstantinos (UTAM-F) RID, ORCID, SAI
Ntaska, A. (GR)
Mácová, Petra (UTAM-F) RID, SAI, ORCID
Badogiannis, E. (GR)
Tsivilis, S. (GR)Celkový počet autorů 6 Číslo článku 124754 Zdroj.dok. Construction and Building Materials. - : Elsevier - ISSN 0950-0618
Roč. 305, October (2021)Poč.str. 14 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova self-healing ; concrete ; chemical additives ; water retarders ; dicarboxylic acids ; durability Obor OECD Materials engineering Způsob publikování Omezený přístup Institucionální podpora UTAM-F - RVO:68378297 UT WOS 000696989300004 EID SCOPUS 85114621791 DOI 10.1016/j.conbuildmat.2021.124754 Anotace The self-healing effect of several combinations of different additives (dicarboxylic acids, sodium carbonate, expansive additive, silica fume, fibers) incorporated in artificially cracked concrete specimens, was investigated. Their effectiveness was assessed through stereomicroscopic observations and durability tests. The structure and chemistry of the healing products were characterized with optical microscopy and Raman spectroscopy. The additives ensured closing crack widths up to 400 μm. The combination dicarboxylic acids/expansive additive performs best by preserving unreacted clinker grains that may hydrate at later stages. Carbonation of portlandite led to calcite precipitation either in bulk (using fibers as nucleation sites) or on the cracks’ surface. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2022 Elektronická adresa https://doi.org/10.1016/j.conbuildmat.2021.124754
Počet záznamů: 1