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作者:

Li, Yaqiang (Li, Yaqiang.) | Li, Yue (Li, Yue.) (学者:李悦) | Ma, Hongyan (Ma, Hongyan.) | Li, Jiaqi (Li, Jiaqi.)

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EI Scopus SCIE

摘要:

Limestone (calcite) calcined clay cement (LC3) is a promising low-CO2 binder, but the low activity of calcite cannot compensate the reduction in clinker factor, resulting in low one-day strength and limiting its broad applications. As recent carbon capture and utilization technologies allow scalable production of vaterite, a more reactive CaCO3 polymorph, we overcome the challenge by introducing vaterite calcined clay cement (VC3), inspired by the vaterite-calcite phase change. In the present study, VC3 exhibits higher compressive strengths and faster hydration than LC3. Compared to hydrated LC3, hydrated VC3 exhibits increased amount of hemi-and mono-carboaluminate formation and decreased amount of stra center dot tlingite formation. With gypsum adjustment, the 1-day strength of VC3 is higher than that of pure cement reference. VC3, a low-CO2 binder, presents great potential as a host of the metastable CaCO3 for carbon storage and utilization and as an enabler of carbon capture at gigaton scales.

关键词:

Low-CO2 cement Carbon storage CCUS Carbon utilization Bio-inspired

作者机构:

  • [ 1 ] [Li, Yaqiang]Beijing Forestry Univ, Dept Civil Engn, Beijing 100083, Peoples R China
  • [ 2 ] [Li, Yue]Beijing Univ Technol, MOE, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Ma, Hongyan]Missouri Univ Sci & Technol, Dept Civil Architectural & Environm Engn, Rolla, MO 65409 USA
  • [ 4 ] [Li, Jiaqi]Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA

通讯作者信息:

  • [Li, Yaqiang]Beijing Forestry Univ, Dept Civil Engn, Beijing 100083, Peoples R China;;[Li, Yue]Beijing Univ Technol, MOE, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China;;[Li, Jiaqi]Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA;;

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来源 :

CEMENT AND CONCRETE RESEARCH

ISSN: 0008-8846

年份: 2024

卷: 175

1 1 . 4 0 0

JCR@2022

被引次数:

WoS核心集被引频次: 28

SCOPUS被引频次: 28

ESI高被引论文在榜: 0 展开所有

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