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    Revising Thermal Stresses in the TSRST for Low-Temperature Cracking Prediction

    Source: Journal of Materials in Civil Engineering:;2009:;Volume ( 021 ):;issue: 011
    Author:
    Raul A. Velásquez
    ,
    Joseph F. Labuz
    ,
    Mihai O. Marasteanu
    ,
    Adam M. Zofka
    DOI: 10.1061/(ASCE)0899-1561(2009)21:11(680)
    Publisher: American Society of Civil Engineers
    Abstract: Two methods are proposed to correct stresses measured with the thermal stress restrained specimen test (TSRST) due to specimen bending. The first method estimates the bending stress from the angle of rotation of the specimen by assuming the location of the axis of rotation in the center of the specimen and perpendicular to the line that connects the two displacement transducers of the TSRST system. Maximum stresses as function of temperature are calculated by superimposing the uniform axial stress and the linear bending stress produced by the eccentricity of the load. The second method calculates the angle of rotation of the specimen more accurately using the data from three measures of displacement. The first method is used to revise thermal stresses of 26 asphalt mixtures prepared in the laboratory and 5 field specimens. The correlation between field and laboratory performance was improved after using the proposed method to correct thermal stresses. Low-transverse cracking was observed for sections with high TSRST strength. Careful analysis of the experimental data obtained from TSRST can provide a good indication of the low-temperature performance of asphalt pavements.
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      Revising Thermal Stresses in the TSRST for Low-Temperature Cracking Prediction

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/46493
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    • Journal of Materials in Civil Engineering

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    contributor authorRaul A. Velásquez
    contributor authorJoseph F. Labuz
    contributor authorMihai O. Marasteanu
    contributor authorAdam M. Zofka
    date accessioned2017-05-08T21:18:35Z
    date available2017-05-08T21:18:35Z
    date copyrightNovember 2009
    date issued2009
    identifier other%28asce%290899-1561%282009%2921%3A11%28680%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/46493
    description abstractTwo methods are proposed to correct stresses measured with the thermal stress restrained specimen test (TSRST) due to specimen bending. The first method estimates the bending stress from the angle of rotation of the specimen by assuming the location of the axis of rotation in the center of the specimen and perpendicular to the line that connects the two displacement transducers of the TSRST system. Maximum stresses as function of temperature are calculated by superimposing the uniform axial stress and the linear bending stress produced by the eccentricity of the load. The second method calculates the angle of rotation of the specimen more accurately using the data from three measures of displacement. The first method is used to revise thermal stresses of 26 asphalt mixtures prepared in the laboratory and 5 field specimens. The correlation between field and laboratory performance was improved after using the proposed method to correct thermal stresses. Low-transverse cracking was observed for sections with high TSRST strength. Careful analysis of the experimental data obtained from TSRST can provide a good indication of the low-temperature performance of asphalt pavements.
    publisherAmerican Society of Civil Engineers
    titleRevising Thermal Stresses in the TSRST for Low-Temperature Cracking Prediction
    typeJournal Paper
    journal volume21
    journal issue11
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)0899-1561(2009)21:11(680)
    treeJournal of Materials in Civil Engineering:;2009:;Volume ( 021 ):;issue: 011
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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