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    Experimental Study on Creep Failure of Non-Steam-Cured Ultrahigh-Performance Concrete under High Uniaxial Compressive Stress

    Source: Journal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 006::page 04022105
    Author:
    Ziyang Zhang
    ,
    Tengfei Xu
    ,
    Kailai Deng
    ,
    Teng Tong
    ,
    Hao Zhou
    DOI: 10.1061/(ASCE)MT.1943-5533.0004246
    Publisher: ASCE
    Abstract: Ultrahigh-performance concrete (UHPC) creep failure was experimentally investigated under high uniaxial compressive stress. The influence of applied stress levels, loading times, and loading rates was considered. The failure mode, ultimate strain, creep coefficient, Poisson’s ratio, and nonlinear creep of UHPC were analyzed. The creep specimens failed suddenly in the tertiary creep stage. The ultimate strain of each creep failure specimen was less than the corresponding peak strain εc. The circumferential creep coefficient was considerably larger than the axial creep coefficient. In the loading phase, no significant increase in Poisson’s ratio was observed for specimens loaded at normal or rapid rates. In the creep phase, Poisson’s ratios increased considerably. The microcracks propagation within the specimens affected the nonlinear creep and creep failure behavior in UHPC specimens under high sustained compressive stress. An amplification factor model for the nonlinear creep strain was proposed, and was validated by comparing measured and calculated results.
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      Experimental Study on Creep Failure of Non-Steam-Cured Ultrahigh-Performance Concrete under High Uniaxial Compressive Stress

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282126
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    contributor authorZiyang Zhang
    contributor authorTengfei Xu
    contributor authorKailai Deng
    contributor authorTeng Tong
    contributor authorHao Zhou
    date accessioned2022-05-07T20:12:36Z
    date available2022-05-07T20:12:36Z
    date issued2022-03-23
    identifier other(ASCE)MT.1943-5533.0004246.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282126
    description abstractUltrahigh-performance concrete (UHPC) creep failure was experimentally investigated under high uniaxial compressive stress. The influence of applied stress levels, loading times, and loading rates was considered. The failure mode, ultimate strain, creep coefficient, Poisson’s ratio, and nonlinear creep of UHPC were analyzed. The creep specimens failed suddenly in the tertiary creep stage. The ultimate strain of each creep failure specimen was less than the corresponding peak strain εc. The circumferential creep coefficient was considerably larger than the axial creep coefficient. In the loading phase, no significant increase in Poisson’s ratio was observed for specimens loaded at normal or rapid rates. In the creep phase, Poisson’s ratios increased considerably. The microcracks propagation within the specimens affected the nonlinear creep and creep failure behavior in UHPC specimens under high sustained compressive stress. An amplification factor model for the nonlinear creep strain was proposed, and was validated by comparing measured and calculated results.
    publisherASCE
    titleExperimental Study on Creep Failure of Non-Steam-Cured Ultrahigh-Performance Concrete under High Uniaxial Compressive Stress
    typeJournal Paper
    journal volume34
    journal issue6
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0004246
    journal fristpage04022105
    journal lastpage04022105-14
    page14
    treeJournal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 006
    contenttypeFulltext
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