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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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
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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