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Influence of additions of synthetic anhydrous calcium carbonate polymorphs on nanolime carbonation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F19%3A00508048" target="_blank" >RIV/68378297:_____/19:00508048 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1016/j.conbuildmat.2019.116802" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2019.116802</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.conbuildmat.2019.116802" target="_blank" >10.1016/j.conbuildmat.2019.116802</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Influence of additions of synthetic anhydrous calcium carbonate polymorphs on nanolime carbonation

  • Original language description

    The influence of synthetic anhydrous calcium carbonate polymorphs, calcite, vaterite and aragonite, on carbonation of nanolime suspension, has been investigated. The higher rates of carbonation observed after 7 days in mixtures containing vaterite and aragonite particles, found explanation in the control exerted by heterogeneous nucleation on the water-mediated reaction mechanism and in the enhanced carbon dioxide diffusivity in the sample volume, both facilitated by the higher specific surface of the powders and the microporous sample fabric. Introduction of synthetic calcium carbonate allowed for exerting control on formed polymorphs, subverting the order of their (meta-)stability. The peculiar microstructure obtained by adding aragonite rod-like particles, mitigates the propagation of desiccation cracks (which impair continuity of the carbonated nanolime film). The mechanism, although still not completely understood, likely involves the regulation of evaporation of liquid fraction and redistribution of the tensional stresses during drying and nanolime crystallization. The obtained results provide new insights into the crystallization of carbonates from nanolime particles and may help in the design of innovative compatible products for consolidation of lime-based materials and carbon dioxide sequestration.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/GA17-05030S" target="_blank" >GA17-05030S: The influence of the reaction conditions on the formation and mechanical properties of CaCO3 polymorphs in lime-based building materials</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Construction and Building Materials

  • ISSN

    0950-0618

  • e-ISSN

  • Volume of the periodical

    228

  • Issue of the periodical within the volume

    December

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    8

  • Pages from-to

    UNSP 116802

  • UT code for WoS article

    000497886100098

  • EID of the result in the Scopus database

    2-s2.0-85071638997