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    Laboratory Approach for Faster Determination of the Loading-Collapse Yield Curve of Compacted Soils

    Source: Journal of Materials in Civil Engineering:;2016:;Volume ( 028 ):;issue: 003
    Author:
    Avirut Chinkulkijniwat
    ,
    Suksun Horpibulsuk
    ,
    Somjai Yubonchit
    ,
    Tanakorn Rakkob
    ,
    Rajeshwar Goodary
    ,
    Arul Arulrajah
    DOI: 10.1061/(ASCE)MT.1943-5533.0001432
    Publisher: American Society of Civil Engineers
    Abstract: A shift in the preconsolidation pressure or yield limit with suction, referred to as the loading-collapse (LC) yield curve, is an important feature of elastoplastic models of unsaturated soils. The LC curve is typically defined in the matric suction versus mean stress plane to account for the effects of matric suction. Conventional methods to determine the LC yield curve rely on a series of isotropic compression tests on specimens with identical stress history. This paper presents an alternative method to determine the LC yield curve from isotropic compression test results of specimens without identical stress history restrictions. A series of equations is proposed, derived from elastoplastic theory and incorporated into conventional compression test results, for drawing the specific LC yield curve. The advantage of the proposed methodology is that the compression tests results need not be taken from identical stress history specimens, which leads to a shorter time frame in the laboratory. Moreover, no additional parameters are required apart from those required in the conventional method. Test results from the literature are used to verify the proposed methodology, and a good agreement between the measured and calculated LC curves was found. The proposed methodology is a less time-consuming and more economical method to draw LC yield curve than the conventional method.
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      Laboratory Approach for Faster Determination of the Loading-Collapse Yield Curve of Compacted Soils

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    http://yetl.yabesh.ir/yetl1/handle/yetl/81049
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    contributor authorAvirut Chinkulkijniwat
    contributor authorSuksun Horpibulsuk
    contributor authorSomjai Yubonchit
    contributor authorTanakorn Rakkob
    contributor authorRajeshwar Goodary
    contributor authorArul Arulrajah
    date accessioned2017-05-08T22:27:53Z
    date available2017-05-08T22:27:53Z
    date copyrightMarch 2016
    date issued2016
    identifier other45828699.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/81049
    description abstractA shift in the preconsolidation pressure or yield limit with suction, referred to as the loading-collapse (LC) yield curve, is an important feature of elastoplastic models of unsaturated soils. The LC curve is typically defined in the matric suction versus mean stress plane to account for the effects of matric suction. Conventional methods to determine the LC yield curve rely on a series of isotropic compression tests on specimens with identical stress history. This paper presents an alternative method to determine the LC yield curve from isotropic compression test results of specimens without identical stress history restrictions. A series of equations is proposed, derived from elastoplastic theory and incorporated into conventional compression test results, for drawing the specific LC yield curve. The advantage of the proposed methodology is that the compression tests results need not be taken from identical stress history specimens, which leads to a shorter time frame in the laboratory. Moreover, no additional parameters are required apart from those required in the conventional method. Test results from the literature are used to verify the proposed methodology, and a good agreement between the measured and calculated LC curves was found. The proposed methodology is a less time-consuming and more economical method to draw LC yield curve than the conventional method.
    publisherAmerican Society of Civil Engineers
    titleLaboratory Approach for Faster Determination of the Loading-Collapse Yield Curve of Compacted Soils
    typeJournal Paper
    journal volume28
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0001432
    treeJournal of Materials in Civil Engineering:;2016:;Volume ( 028 ):;issue: 003
    contenttypeFulltext
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