气候变化领域集成服务门户(CCPortal): Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit

CCPortal

DOI	10.1038/s41467-021-21148-w
	Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit
	Ravikumar D.; Zhang D.; Keoleian G.; Miller S.; Sick V.; Li V.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	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. © 2021, The Author(s).
语种	英语
scopus关键词	carbon dioxide; concrete; natural gas; carbon dioxide; carbon sequestration; compressive strength; electricity; Article; carbon utilization; climate; compressive strength; electric power plant; electricity; life cycle; Monte Carlo method; sensitivity analysis
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251513
作者单位	Center for Sustainable Systems (CSS), School for Environment and Sustainability (SEAS), University of Michigan, Ann Arbor, MI, United States; National Renewable Energy Laboratory (NREL), Golden, CO, United States; Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States; Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Ravikumar D.,Zhang D.,Keoleian G.,et al. Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit[J],2021,12(1).
APA	Ravikumar D.,Zhang D.,Keoleian G.,Miller S.,Sick V.,&Li V..(2021).Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit.Nature Communications,12(1).
MLA	Ravikumar D.,et al."Carbon dioxide utilization in concrete curing or mixing might not produce a net climate benefit".Nature Communications 12.1(2021).