DETERMINATION OF THE OPTIMAL COMPOSITION OF THE NEW HYDRAULIC BINDER PREPARED FROM METAKAOLIN, ANHYDRITE AND LIME

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43925791" target="_blank" >RIV/60461373:22310/22:43925791 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22810/22:43925791 RIV/68407700:21110/22:00364133
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
DETERMINATION OF THE OPTIMAL COMPOSITION OF THE NEW HYDRAULIC BINDER PREPARED FROM METAKAOLIN, ANHYDRITE AND LIME
Original language description
This work investigates the preparation of a new hydraulic binder based on metakaolin, anhydrite and free lime,which may in the future become an alternative to Portland cement. A series of 26 mixtures with varying amountsof calcined metakaolin clay (50–80 wt.%), anhydrite (10–30 wt.%) and lime (5–35 wt.%) were prepared. Themixtures had the same water to binder ratio of 0.35 and contained a superplasticizer. The compressive strengthof the mixtures was assessed after 7 and 28 days. Furthermore, on selected 28-day samples of hardened bindersthe phase composition and porosity were determined and also scanning electron microscope images were taken.Compressive strengths exceeding 60 MPa after 7 and 28 days of wet storage were measured for the selectedoptimal compositions. These results are comparable to the characteristics of Portland cement. In addition, theseoptimal mixtures did not display any potentially dangerous expansive behaviour. Expansion behaviour wasobserved only for samples with high lime content, especially in the mixture containing 35 wt.% of lime.Furthermore, it was found that ettringite is the main crystalline phase in hardened binder mixtures.
Czech name
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Czech description
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Project
<a href="/en/project/FW01010195" target="_blank" >FW01010195: Advanced and inovative processing technologies for strategic utilization and storing of coal combustion products (CCPs)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 9th International Conference on Chemical Technology
ISBN
978-80-88307-11-2
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
111-116
Publisher name
Czech Society of Industrial Chemistry
Place of publication
Prague
Event location
Mikulov
Event date
Apr 25, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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