CO 2 Mineralization Methods in Cement and Concrete Industry

Maciej Zajac, Jan Skocek, Mohsen Ben Haha and Jan Deja
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Maciej Zajac: HeidelbergCement AG, Global R&D, Oberklamweg 2-4, 69181 Leimen, Germany
Jan Skocek: HeidelbergCement AG, Global R&D, Oberklamweg 2-4, 69181 Leimen, Germany
Mohsen Ben Haha: HeidelbergCement AG, Global R&D, Oberklamweg 2-4, 69181 Leimen, Germany
Jan Deja: Department of Building Materials Technology, Faculty of Material Science and Ceramics, AGH University of Science and Technology, a. Mickiewicza 30, 30-059 Kraków, Poland

Energies, 2022, vol. 15, issue 10, 1-26

Abstract: Production of Portland clinker is inherently associated with CO 2 emissions originating from limestone decomposition, the irreplaceable large-scale source of calcium oxide needed. Besides carbon capture and storage, CO 2 mineralization is the only lever left to reduce these process emissions. CO 2 mineralization is a reversal reaction to clinker production—CO 2 is bound into stable carbonates in an exothermic process. It can be applied in several environmentally and economically favorable ways at different stages of clinker, cement and concrete life cycle. These possibilities are assessed and discussed in this contribution. The results demonstrate that when combined with concrete recycling, the complete circularity of all its constituents, including the process CO 2 emissions from the clinker, can be achieved and the overall related CO 2 intensity significantly reduced.

Keywords: recycling; circular economy; carbonation; recycled aggregates; supplementary cementitious material; carbon neutrality (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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