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    Optimization of Sustainable Alkali Activated Municipal Solid Waste Incinerator Bottom Ash Materials with High Performance

    Source: Journal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 010::page 04024311-1
    Author:
    Guangzhao Yang
    ,
    Xing Qi
    ,
    Yifei Hao
    ,
    Rongwei Yang
    ,
    Zhu Pan
    ,
    Kaikang Liang
    ,
    Jian-Xin Lu
    ,
    Guangqi Xiong
    ,
    Bo Wang
    DOI: 10.1061/JMCEE7.MTENG-17618
    Publisher: American Society of Civil Engineers
    Abstract: In general, municipal solid waste incinerator bottom ash (IBA) is mainly utilized as fillers in nonstructural concrete products due to its low reactivity. In this study, the high-strength alkali-activated materials (AAMs) using high calcium IBA was developed. A ternary contour diagram was introduced to optimize the composition of thermally activated IBA (TMBA), ground granulated blast furnace slag (GGBS), and fly ash (FA) in AAMs. The result showed that a high concentration of calcium ions in the ternary system contributed to the provision of nucleation sites for the precipitation of products, thus leading to the promotion of hardening. The optimal compressive strength (80–85 MPa) of AAMs was achieved using 60%–80% GGBS content, 10%–40% TMBA content, and 0%–10% FA content. The AAMs showed high resistance to sulphate attack, chloride penetration, and freeze-thaw when the TMBA content was less than 40%. This was attributed to a dense pore structure formation promoted by the presence of calcium minerals (anorthite, wollastonite, mayenite and gehlenite) as indicated in the X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM) analysis. The embodied CO2 index of the AAMs was about 59%–87% lower than cement, and it was a cleaner cementitious material.
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      Optimization of Sustainable Alkali Activated Municipal Solid Waste Incinerator Bottom Ash Materials with High Performance

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4299260
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    • Journal of Materials in Civil Engineering

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    contributor authorGuangzhao Yang
    contributor authorXing Qi
    contributor authorYifei Hao
    contributor authorRongwei Yang
    contributor authorZhu Pan
    contributor authorKaikang Liang
    contributor authorJian-Xin Lu
    contributor authorGuangqi Xiong
    contributor authorBo Wang
    date accessioned2024-12-24T10:37:25Z
    date available2024-12-24T10:37:25Z
    date copyright10/1/2024 12:00:00 AM
    date issued2024
    identifier otherJMCEE7.MTENG-17618.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4299260
    description abstractIn general, municipal solid waste incinerator bottom ash (IBA) is mainly utilized as fillers in nonstructural concrete products due to its low reactivity. In this study, the high-strength alkali-activated materials (AAMs) using high calcium IBA was developed. A ternary contour diagram was introduced to optimize the composition of thermally activated IBA (TMBA), ground granulated blast furnace slag (GGBS), and fly ash (FA) in AAMs. The result showed that a high concentration of calcium ions in the ternary system contributed to the provision of nucleation sites for the precipitation of products, thus leading to the promotion of hardening. The optimal compressive strength (80–85 MPa) of AAMs was achieved using 60%–80% GGBS content, 10%–40% TMBA content, and 0%–10% FA content. The AAMs showed high resistance to sulphate attack, chloride penetration, and freeze-thaw when the TMBA content was less than 40%. This was attributed to a dense pore structure formation promoted by the presence of calcium minerals (anorthite, wollastonite, mayenite and gehlenite) as indicated in the X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM) analysis. The embodied CO2 index of the AAMs was about 59%–87% lower than cement, and it was a cleaner cementitious material.
    publisherAmerican Society of Civil Engineers
    titleOptimization of Sustainable Alkali Activated Municipal Solid Waste Incinerator Bottom Ash Materials with High Performance
    typeJournal Article
    journal volume36
    journal issue10
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-17618
    journal fristpage04024311-1
    journal lastpage04024311-15
    page15
    treeJournal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 010
    contenttypeFulltext
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