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http://dx.doi.org/10.5345/JKIBC.2022.22.3.251

Component and Phase Analysis of Calcium Silicate Cement Clinker by Raw Materials Mix Design  

Lee, Hyang-Sun (Carbon Neutral Materials Center, Korea Institute of Ceramic Engineering and Technology)
Song, Hun (Carbon Neutral Materials Center, Korea Institute of Ceramic Engineering and Technology)
Publication Information
Journal of the Korea Institute of Building Construction / v.22, no.3, 2022 , pp. 251-258 More about this Journal
Abstract
In the cement industry, in order to reduce CO2 emissions, technology for raw materials substitution and conversion, technology for improving process efficiency of utilizing low-carbon new heat sources, and technology for collecting and recycling process-generated CO2 are being developed. In this study, we conducted a basic experiment to contribute to the development of CSC that can store CO2 as carbonate minerals among process-generated CO2 capture and recycling technologies. Three types of CSC clinker with different SiO2/(CaO+SiO2) molar ratios were prepared with the clinker raw material formulation, and the characteristics of the clinker were analyzed. As a result of analysis and observation of CSC clinker, wollastonite and rankinite were formed. In addition, as a result of the carbonation test of the CSC paste, it was confirmed that calcite was produced as a carbonation product. The lower the SiO2/(CaO+SiO2) molar ratio in the CSC clinker chemical composition, the lower the wollastonite production amount, and the higher the rankinite production amount. And the amount of calcite production increased with the progress of carbonation of the CSC paste specimen. It is judged that rankinite is more reactive in mineralizing CO2 than wollastonite.
Keywords
calcium silicate cement; mineral carbonation; component analysis; phase analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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