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    Monitoring the Evolution of Accelerated Carbonation of Hardened Cement Pastes by X-Ray Computed Tomography

    Source: Journal of Materials in Civil Engineering:;2013:;Volume ( 025 ):;issue: 003
    Author:
    Jiande Han
    ,
    Wei Sun
    ,
    Ganghua Pan
    ,
    Wang Caihui
    DOI: 10.1061/(ASCE)MT.1943-5533.0000610
    Publisher: American Society of Civil Engineers
    Abstract: The evolution of carbonation front progress, crack spatial distribution, and pore structure parameters of hardened cement paste have been monitored in situ by three-dimensional (3D) X-ray computed tomography (XCT) at different accelerated carbonation ages of 0, 3, 7, 14, and 28 days, respectively. The gray-value histograms of cement paste are a function of carbonation time, and the carbonation degrees at different times can be estimated by the volume fractions of uncarbonated and carbonated parts. Many cracks generate along the carbonation direction because of carbonation shrinkage. With the extension of the carbonation time, the volume and surface of cracks become larger. The porosity markedly decreases when pore volume is between 0.01 and
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      Monitoring the Evolution of Accelerated Carbonation of Hardened Cement Pastes by X-Ray Computed Tomography

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    http://yetl.yabesh.ir/yetl1/handle/yetl/66999
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    contributor authorJiande Han
    contributor authorWei Sun
    contributor authorGanghua Pan
    contributor authorWang Caihui
    date accessioned2017-05-08T21:56:08Z
    date available2017-05-08T21:56:08Z
    date copyrightMarch 2013
    date issued2013
    identifier other%28asce%29mt%2E1943-5533%2E0000646.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/66999
    description abstractThe evolution of carbonation front progress, crack spatial distribution, and pore structure parameters of hardened cement paste have been monitored in situ by three-dimensional (3D) X-ray computed tomography (XCT) at different accelerated carbonation ages of 0, 3, 7, 14, and 28 days, respectively. The gray-value histograms of cement paste are a function of carbonation time, and the carbonation degrees at different times can be estimated by the volume fractions of uncarbonated and carbonated parts. Many cracks generate along the carbonation direction because of carbonation shrinkage. With the extension of the carbonation time, the volume and surface of cracks become larger. The porosity markedly decreases when pore volume is between 0.01 and
    publisherAmerican Society of Civil Engineers
    titleMonitoring the Evolution of Accelerated Carbonation of Hardened Cement Pastes by X-Ray Computed Tomography
    typeJournal Paper
    journal volume25
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000610
    treeJournal of Materials in Civil Engineering:;2013:;Volume ( 025 ):;issue: 003
    contenttypeFulltext
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