Effects of a composition change of ordinary Portland cement on waste utilization and CO2 emissions in Japan

This paper estimates the effects of a composition change of ordinary Portland cement on waste utilization and CO 2 emissions in the Japanese cement industry based on the previous literature. It is estimated that increasing the aluminate phase content in clinker and using 10 mass% of mineral admixtur...

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Bibliographic Details
Published in:Journal of material cycles and waste management 2021-05, Vol.23 (3), p.1270-1275
Main Authors: Kurokawa, Daisuke, Nakaguchi, Ayuka, Hirano, Yoko, Iida, Tatsuo, Mori, Taiichiro, Matsuzawa, Kazuki, Sakai, Etsuo
Format: Article
Language:English
Subjects:
Admixtures
Carbon dioxide
Carbon dioxide emissions
Cement
Civil Engineering
Clinker
Composition effects
Engineering
Environmental Management
Portland cement
Portland cements
Raw materials
Reduction
Waste Management/Waste Technology
Waste utilization
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Summary:This paper estimates the effects of a composition change of ordinary Portland cement on waste utilization and CO 2 emissions in the Japanese cement industry based on the previous literature. It is estimated that increasing the aluminate phase content in clinker and using 10 mass% of mineral admixtures result in an increase of 74.6 g/kg-cement in waste use and a reduction of 56.3 g/kg-cement in CO 2 emissions on the business-as-usual basis. This indicates a way to achieve both increase in waste use and reduction in CO 2 emissions at the same time. Based on these results, it is estimated that CO 2 emissions would be reduced by 2080 thousand tons in 2016 and 2140 thousand tons in 2030 from the business-as-usual values. Additionally, waste use for raw materials can be increased by 2760 thousand tons and 2850 thousand tons in respective years.
ISSN:1438-4957
1611-8227
DOI:10.1007/s10163-021-01177-9