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Durability assessment of self-healing in ordinary Portland cement concrete containing chemical additives

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    SYSNO ASEP0545398
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleDurability assessment of self-healing in ordinary Portland cement concrete containing chemical additives
    Author(s) 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)
    Number of authors6
    Article number124754
    Source TitleConstruction and Building Materials. - : Elsevier - ISSN 0950-0618
    Roč. 305, October (2021)
    Number of pages14 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    Keywordsself-healing ; concrete ; chemical additives ; water retarders ; dicarboxylic acids ; durability
    OECD categoryMaterials engineering
    Method of publishingLimited access
    Institutional supportUTAM-F - RVO:68378297
    UT WOS000696989300004
    EID SCOPUS85114621791
    DOI10.1016/j.conbuildmat.2021.124754
    AnnotationThe 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.
    WorkplaceInstitute of Theoretical and Applied Mechanics
    ContactKulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
    Year of Publishing2022
    Electronic addresshttps://doi.org/10.1016/j.conbuildmat.2021.124754
Number of the records: 1