Preparation of aragonite whiskers by wet carbonation of wollastonite: Carbon mineralization behavior and its effect on cement properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F25%3A10258667" target="_blank" >RIV/61989100:27360/25:10258667 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0950061825037262" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061825037262</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.conbuildmat.2025.143575" target="_blank" >10.1016/j.conbuildmat.2025.143575</a>
Alternative languages
Result language
angličtina
Original language name
Preparation of aragonite whiskers by wet carbonation of wollastonite: Carbon mineralization behavior and its effect on cement properties
Original language description
To preserve the original physical morphology of wollastonite and enhance its pozzolanic reactivity, this study systematically investigated the feasibility of preparing aragonite through the aqueous carbonation of wollastonite. The influences of MgCl2 concentration, temperature, and reaction duration on the mineralization behavior of wollastonite were analyzed. Furthermore, the effects of carbonated wollastonite on cement hydration and strength were evaluated. The results indicated that under optimal conditions (0.1 mol/L MgCl2, 80 degrees C), a carbonation degree of 25.31 % (COQ capture capacity of 8.28 g COQ/100 g wollastonite) was achieved after 6 h of carbonation. During this process, aragonite crystals with diameters of 0.2-0.5 mu m and lengths of 2-5 mu m were precipitated. Simultaneously, the dissolved silica phase underwent condensation, resulting in amorphous Ca-modified silica gel with a relatively high degree of polymerization. Additionally, when the incorporation of carbonated wollastonite ranged from 5 % to 15 %, it accelerated the cement reaction process and improved both the compressive strength and flexural strength of cement mortar. The research findings will provide support for enhancing the performance of cement-based building materials and promoting low-carbon development in the construction and building materials.
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
20500 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
1879-0526
Volume of the periodical
494
Issue of the periodical within the volume
10 October 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
nestránkováno
UT code for WoS article
001572429000001
EID of the result in the Scopus database
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