Formation of belite-based binder from waste materials
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F20%3AN0000043" target="_blank" >RIV/26232511:_____/20:N0000043 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs10973-020-10252-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs10973-020-10252-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-020-10252-6" target="_blank" >10.1007/s10973-020-10252-6</a>
Alternative languages
Result language
angličtina
Original language name
Formation of belite-based binder from waste materials
Original language description
The present work deals with the preparation of belite-based binders using a mixture of sludge waste from mining and washing of limestone (source of CaCO3 and SiO2), and waste material from acetylene gas cylinders filler containing hydrosilicates—tobermorite and xonotlite. These wastes are of suitable oxide composition for the preparation of belite cements. The materials were mixed together in different proportions and burned at temperatures from 700 to 1300 °C. 3% K2O was used as dopant to stabilize the reactive belite modification. The main interest was focused on the process of belite formation related to its reactivity. During burning of waste material mixtures, limestone is decomposed providing CaO, while tobermorite and xonotlite are transformed into wollastonite. Then, belite is formed by reaction of SiO2 and CaO, as it is typical in Portland clinker, but also by reaction of wollastonite and CaO. The process of belite formation influences its hydraulic properties to a great extent. Carbonation of calcium silicates was studied as well. Phase composition of burned products was studied by X-ray powder diffraction. Hydration and carbonation products were identified by differential thermal analysis. It was confirmed that the content of rankinite has a significant effect on CO2 uptake. Carbonation rate was also positively affected by a higher wollastonite content.
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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermal Analysis and Calorimetry
ISSN
1388-6150
e-ISSN
1588-2926
Volume of the periodical
142
Issue of the periodical within the volume
5
Country of publishing house
HU - HUNGARY
Number of pages
9
Pages from-to
1625-1633
UT code for WoS article
000578564600002
EID of the result in the Scopus database
2-s2.0-85092381552