Low-Energy Cements and Belite Activation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F22%3AN0000059" target="_blank" >RIV/26232511:_____/22:N0000059 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Low-Energy Cements and Belite Activation
Original language description
The term "low-energy cements" describes cements that can replace ordinary Portland cement in at least some applications and can also reduce energy consumption during the production process. Extension of these cements could lead both to lower costs of binders' production and lower emissions, CO2 especially. Belite cements are part of low-energy cements. Pure belite clinkers with interstitial matter comprising C3A and C4AF are not produced, since they yield materials with insufficient strength. Currently, sulfoaluminate-belite cements, low-energy cements doped with fluorine and chlorine as well as undoped high-belite cements are produced in limited volumes in China. Results of hydraulic activation of high-belite clinker by sulfate anions are also given in this paper. The principle of activation is the preparation of belite clinker with increased Ca:Si ratio in the structure of dicalcium silicate by substitution a part of SiO44- by SO42-. Cements prepared from these high-belite clinkers with alite content up to 30% that were burned at 1,350°C display the same technological properties as ordinary alite Portland cements, including early strengths as ordinary alite Portland cements and comply with standard EN 197-1.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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