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    Potential Applications of Phase Change Materials to Extend the Winter Construction Time of Earth-Rock Dam in Cold Regions

    Source: Journal of Materials in Civil Engineering:;2021:;Volume ( 033 ):;issue: 008::page 04021194-1
    Author:
    Donghai Liu
    ,
    Youle Wang
    ,
    Jianyu Liang
    DOI: 10.1061/(ASCE)MT.1943-5533.0003818
    Publisher: ASCE
    Abstract: During earth-rock dam construction, temperature control to reduce the freeze–thaw impact on core-wall clay in cold regions is difficult. To address this challenge, this research developed a phase change material (PCM) incorporated into clay (PCM-clay) to improve the construction efficiency in a cold period. In the preparation of PCM-clay, considerable latent heat was stored by harvesting thermal energy from the environment, which was used for temperature control to extend the winter construction time. The feasibility of PCM-clay as core-wall clay was verified by an analysis of working performance. The results indicate that low-content PCM-clay (7%) is able to protect core-wall clay from freeze–thaw damage in a simulated environment (minimum temperature=−4.3°C) in a 1-day cycle. The working performance (e.g., shear strength and impermeability) supports that PCM-clay is a promising solution for temperature control of core-wall clay during earth-rock dam construction in cold regions.
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      Potential Applications of Phase Change Materials to Extend the Winter Construction Time of Earth-Rock Dam in Cold Regions

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4270120
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    • Journal of Materials in Civil Engineering

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    contributor authorDonghai Liu
    contributor authorYoule Wang
    contributor authorJianyu Liang
    date accessioned2022-01-31T23:39:39Z
    date available2022-01-31T23:39:39Z
    date issued8/1/2021
    identifier other%28ASCE%29MT.1943-5533.0003818.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4270120
    description abstractDuring earth-rock dam construction, temperature control to reduce the freeze–thaw impact on core-wall clay in cold regions is difficult. To address this challenge, this research developed a phase change material (PCM) incorporated into clay (PCM-clay) to improve the construction efficiency in a cold period. In the preparation of PCM-clay, considerable latent heat was stored by harvesting thermal energy from the environment, which was used for temperature control to extend the winter construction time. The feasibility of PCM-clay as core-wall clay was verified by an analysis of working performance. The results indicate that low-content PCM-clay (7%) is able to protect core-wall clay from freeze–thaw damage in a simulated environment (minimum temperature=−4.3°C) in a 1-day cycle. The working performance (e.g., shear strength and impermeability) supports that PCM-clay is a promising solution for temperature control of core-wall clay during earth-rock dam construction in cold regions.
    publisherASCE
    titlePotential Applications of Phase Change Materials to Extend the Winter Construction Time of Earth-Rock Dam in Cold Regions
    typeJournal Paper
    journal volume33
    journal issue8
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0003818
    journal fristpage04021194-1
    journal lastpage04021194-12
    page12
    treeJournal of Materials in Civil Engineering:;2021:;Volume ( 033 ):;issue: 008
    contenttypeFulltext
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