CAREER: SusChEM: Controlling Carbonation Degradation in Sustainable Cements by Stabilizing Amorphous Calcium Carbonate

职业:SusChEM:通过稳定无定形碳酸钙来控制可持续水泥中的碳化降解

基本信息

  • 批准号:
    1553607
  • 负责人:
  • 金额:
    $ 54.97万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2016
  • 资助国家:
    美国
  • 起止时间:
    2016-07-01 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

NON-TECHNICAL DESCRIPTION: Portland cement manufacturing accounts for 5-8% of global anthropogenic carbon dioxide emissions, and with concrete utilization set to double over the next few decades there is a pressing need for sustainable concrete alternatives. One such alternative is alkali-activated materials (AAMs), a class of cement whose manufacture emits less carbon dioxide than Portland cement. However, the long term durability of new cementitious materials must be understood and optimized prior to employment in the construction industry. This project investigates the chemical reactions that occur during degradation of AAMs due to exposure to atmospheric carbon dioxide, a form of degradation that plagues both Portland cement and new cementitious materials. The ability to arrest the degradation reaction(s) is being explored by exploiting the stabilizing effect of magnesium on the carbonate-based reaction products (amorphous calcium carbonate). The development of durable and sustainable cementitious materials will lead to the implementation of sustainable products in residential and commercial construction industry, which will significantly reduce the associated carbon dioxide emissions. The project promotes and encourages underrepresented minorities and women in science, technology, engineering and mathematics (STEM) through outreach components centered on the new applied science/engineering curriculum that is being instituted in high schools in New Jersey.TECHNICAL DETAILS: This project will provide a deep understanding of the complex phase formation processes that occur during carbonation-induced degradation of slag-based AAM pastes. Key objectives include (i) obtaining a fundamental understanding of the role of magnesium in stabilizing the precipitated amorphous carbonate phase and (ii) determining the short and long-term stability of the disordered phases, including calcium-(sodium)-alumino-silicate-hydrate gel and amorphous carbonates. Highly carbonation-resistant slag-based AAMs are being developed through this research, which have the potential to supplant existing cement technologies. To obtain this understanding a suite of state-of-the-art experimental techniques are being used, including training the next generation of scientists (undergraduate and graduate students) in cutting-edge research. Techniques include: micron-resolved atomic structural information obtained using X-ray pair distribution function analysis combined with micro-tomography, nanoscale elemental mapping using nano-fluorescence, X-ray diffraction, infrared spectroscopy, thermal analysis and synchrotron X-ray absorption fine structure.
非技术描述:波特兰水泥生产占全球人为二氧化碳排放量的5-8%,随着混凝土利用率在未来几十年翻一番,迫切需要可持续的混凝土替代品。其中一种替代品是碱活化材料(AAMs),这是一种水泥,其制造过程中排放的二氧化碳比波特兰水泥少。然而,在建筑行业就业之前,必须了解和优化新型胶凝材料的长期耐久性。该项目研究了由于暴露于大气中的二氧化碳而导致的AAMs降解过程中发生的化学反应,这是一种困扰波特兰水泥和新型胶凝材料的降解形式。通过利用镁对碳酸盐基反应产物(无定形碳酸钙)的稳定作用,正在探索阻止降解反应的能力。耐用和可持续胶凝材料的发展将导致可持续产品在住宅和商业建筑行业的实施,这将大大减少相关的二氧化碳排放。该项目通过以新泽西州高中正在制定的新的应用科学/工程课程为中心的外展内容,促进和鼓励代表性不足的少数民族和女性在科学、技术、工程和数学(STEM)领域的发展。技术细节:该项目将提供一个复杂的相形成过程的深刻理解,发生在炭化诱导的渣基AAM浆料的降解。主要目标包括(i)对镁在稳定沉淀的无定形碳酸盐相中的作用有一个基本的了解,(ii)确定无序相的短期和长期稳定性,包括钙(钠)铝硅酸盐水合物凝胶和无定形碳酸盐。通过这项研究,高抗碳化渣基aam正在开发中,它有可能取代现有的水泥技术。为了获得这种理解,正在使用一套最先进的实验技术,包括在前沿研究中培训下一代科学家(本科生和研究生)。技术包括:利用x射线对分布函数分析结合微层析成像获得微米级的原子结构信息,利用纳米荧光、x射线衍射、红外光谱、热分析和同步加速器x射线吸收精细结构进行纳米级元素制图。

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A parametric study of accelerated carbonation in alkali-activated slag
  • DOI:
    10.1016/j.cemconres.2021.106454
  • 发表时间:
    2021-04-14
  • 期刊:
  • 影响因子:
    11.4
  • 作者:
    McCaslin, Eric R.;White, Claire E.
  • 通讯作者:
    White, Claire E.
Effects of magnesium content and carbonation on the multiscale pore structure of alkali-activated slags
镁含量和碳化对碱激活渣多尺度孔隙结构的影响
  • DOI:
    10.1016/j.cemconres.2020.105979
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    11.4
  • 作者:
    Wang, Sarah Y.;McCaslin, Eric;White, Claire E.
  • 通讯作者:
    White, Claire E.
A Roadmap for Production of Cement and Concrete with Low-CO2 Emissions
  • DOI:
    10.1007/s12649-020-01180-5
  • 发表时间:
    2020-08
  • 期刊:
  • 影响因子:
    3.2
  • 作者:
    J. V. van Deventer;C. White;R. Myers
  • 通讯作者:
    J. V. van Deventer;C. White;R. Myers
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Claire White其他文献

Establishing Personal Identity in Reincarnation: Minds and Bodies Reconsidered
在轮回中建立个人身份:重新考虑思想和身体
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Claire White
  • 通讯作者:
    Claire White
The Dead May Kill You
死者可能会杀了你
  • DOI:
    10.1163/15685373-12340135
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0.4
  • 作者:
    Claire White;Maya Marin;D. Fessler
  • 通讯作者:
    D. Fessler
Sensuous Communism: Sand with Marx
感性共产主义:与马克思的沙子
  • DOI:
    10.1215/00104124-2862021
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Claire White
  • 通讯作者:
    Claire White
Improving Reading across Subject Areas with Word Generation. CREATE Brief.
通过单词生成提高跨学科领域的阅读。
  • DOI:
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J. Lawrence;Claire White;C. Snow
  • 通讯作者:
    C. Snow
The Cognitive Foundations of Reincarnation
轮回的认知基础
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Claire White
  • 通讯作者:
    Claire White

Claire White的其他文献

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{{ truncateString('Claire White', 18)}}的其他基金

EAGER: Increased Service Life of Sustainable Cements via Electric Fields
EAGER:通过电场延长可持续水泥的使用寿命
  • 批准号:
    2243059
  • 财政年份:
    2023
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Standard Grant
Optimizing the Temperature and Chemical Stability of Fly Ash Aluminosilicate Composites at the Nanoscale
在纳米尺度上优化粉煤灰硅铝酸盐复合材料的温度和化学稳定性
  • 批准号:
    1727346
  • 财政年份:
    2017
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Standard Grant
Sulfate Attack Mechanisms in Geopolymers: Measurements and Modeling at the Nanoscale
地质聚合物中的硫酸盐侵蚀机制:纳米尺度的测量和建模
  • 批准号:
    1362039
  • 财政年份:
    2014
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Standard Grant

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Collaborative Research: SUSCHEM: Engineering Polymer-Nanocatalyst Membranes for Direct Capture of CO2 and Electrochemical Conversion to C2+ Liquid Fuel
合作研究:SUSCHEM:用于直接捕获 CO2 和电化学转化为 C2 液体燃料的工程聚合物纳米催化剂膜
  • 批准号:
    2324346
  • 财政年份:
    2023
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Standard Grant
Collaborative Research: SUSCHEM: Engineering Polymer-Nanocatalyst Membranes for Direct Capture of CO2 and Electrochemical Conversion to C2+ Liquid Fuel
合作研究:SUSCHEM:用于直接捕获 CO2 和电化学转化为 C2 液体燃料的工程聚合物纳米催化剂膜
  • 批准号:
    2324345
  • 财政年份:
    2023
  • 资助金额:
    $ 54.97万
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    Standard Grant
SusChEM: Harnessing Stable Peroxides for Selective Nitrogen Atom and Fluoroalkyl Transfer
SusChEM:利用稳定的过氧化物进行选择性氮原子和氟烷基转移
  • 批准号:
    2200040
  • 财政年份:
    2022
  • 资助金额:
    $ 54.97万
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    Standard Grant
CAREER: SusChEM: Iron Catalysts for the Reduction of Amides
职业:SusChEM:用于还原酰胺的铁催化剂
  • 批准号:
    2146728
  • 财政年份:
    2021
  • 资助金额:
    $ 54.97万
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CAREER: SusChEM: Renewable Biocatalysts for Degradation of Persistent Organic Contaminants Using Synthetic Biology
职业:SusChEM:利用合成生物学降解持久性有机污染物的可再生生物催化剂
  • 批准号:
    2154345
  • 财政年份:
    2021
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Continuing Grant
SusChEM: C-H Bond Electroactivation of Nonpolar Organic Substrates in Water: Enzyme-Mediated Reaction Pathways in Microemulsions
SusChEM:水中非极性有机底物的 C-H 键电活化:微乳液中酶介导的反应途径
  • 批准号:
    2035669
  • 财政年份:
    2021
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    $ 54.97万
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CAREER: SusChEM: Copper-Catalyzed Aerobic Dehydrogenative C-C Bond Formation through sp3 C-H Bond Functionalization
职业:SusChEM:通过 sp3 C-H 键功能化铜催化有氧脱氢 C-C 键形成
  • 批准号:
    2028770
  • 财政年份:
    2020
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Continuing Grant
SusChEM: Collaborative Research: Identification of the critical length scales and chemistries responsible for the anti-fouling properties of heterogeneous surfaces
SusChEM:合作研究:确定负责异质表面防污性能的临界长度尺度和化学成分
  • 批准号:
    2023847
  • 财政年份:
    2019
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    $ 54.97万
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SusChem Collaborative Research: Process Optimization of Novel Routes for the Production of bio-based Para-Xylene
SusChem 合作研究:生物基对二甲苯生产新路线的工艺优化
  • 批准号:
    2005905
  • 财政年份:
    2019
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    $ 54.97万
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CAREER: SusChEM: Synthesis and Characterization of Disulfonated Poly(arylene ether sulfone 2,4,6-Trichloro-1,3,5-triazine) Hybrid Copolymers
职业:SusChEM:二磺化聚(亚芳基醚砜 2,4,6-三氯-1,3,5-三嗪)杂化共聚物的合成和表征
  • 批准号:
    2006757
  • 财政年份:
    2019
  • 资助金额:
    $ 54.97万
  • 项目类别:
    Continuing Grant
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