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Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit

Author

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  • Dwarakanath Ravikumar

    (University of Michigan
    National Renewable Energy Laboratory (NREL))

  • Duo Zhang

    (University of Michigan)

  • Gregory Keoleian

    (University of Michigan)

  • Shelie Miller

    (University of Michigan)

  • Volker Sick

    (University of Michigan)

  • Victor Li

    (University of Michigan)

Abstract

Carbon capture and utilization for concrete production (CCU concrete) is estimated to sequester 0.1 to 1.4 gigatons of carbon dioxide (CO2) by 2050. However, existing estimates do not account for the CO2 impact from the capture, transport and utilization of CO2, change in compressive strength in CCU concrete and uncertainty and variability in CCU concrete production processes. By accounting for these factors, we determine the net CO2 benefit when CCU concrete produced from CO2 curing and mixing substitutes for conventional concrete. The results demonstrate a higher likelihood of the net CO2 benefit of CCU concrete being negative i.e. there is a net increase in CO2 in 56 to 68 of 99 published experimental datasets depending on the CO2 source. Ensuring an increase in compressive strength from CO2 curing and mixing and decreasing the electricity used in CO2 curing are promising strategies to increase the net CO2 benefit from CCU concrete.

Suggested Citation

  • Dwarakanath Ravikumar & Duo Zhang & Gregory Keoleian & Shelie Miller & Volker Sick & Victor Li, 2021. "Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit," Nature Communications, Nature, vol. 12(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21148-w
    DOI: 10.1038/s41467-021-21148-w
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    Cited by:

    1. Habibi, Alireza & Bamshad, Omid & Golzary, Abooali & Buswell, Richard & Osmani, Mohammed, 2024. "Biases in life cycle assessment of circular concrete," Renewable and Sustainable Energy Reviews, Elsevier, vol. 192(C).
    2. Nehdi, Moncef L. & Marani, Afshin & Zhang, Lei, 2024. "Is net-zero feasible: Systematic review of cement and concrete decarbonization technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 191(C).
    3. Zhang, Ning & Zhang, Duo & Zuo, Jian & Miller, Travis R. & Duan, Huabo & Schiller, Georg, 2022. "Potential for CO2 mitigation and economic benefits from accelerated carbonation of construction and demolition waste," Renewable and Sustainable Energy Reviews, Elsevier, vol. 169(C).

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