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    Three-Dimensional Microstructural-Based Discrete Element Viscoelastic Modeling of Creep Compliance Tests for Asphalt Mixtures

    Source: Journal of Materials in Civil Engineering:;2011:;Volume ( 023 ):;issue: 001
    Author:
    Zhanping You
    ,
    Yu Liu
    ,
    Qingli Dai
    DOI: 10.1061/(ASCE)MT.1943-5533.0000038
    Publisher: American Society of Civil Engineers
    Abstract: Microstructural-based discrete element (DE) models have been used for a better understanding of asphalt pavement concrete since the late 1990s. Most current studies have been done with two-dimensional (2D) models. Moreover, elastic models are primarily employed for simulation of an asphalt matrix’s time-dependent behaviors. A 2D model is too simple to capture the complex microstructure of asphalt concrete, and an elastic model is not sufficient for simulating an asphalt matrix’s viscoelastic behaviors. Therefore, it is necessary to consider a three-dimensional (3D) viscoelastic model for microstructural-based DE simulation of asphalt mixture behaviors. Currently, it is easy to build such a 3D microstructural-based DE viscoelastic model using the existing techniques presented in the previous studies. A major challenge, however, is to reduce the computation time to run the 3D microstructural-based DE viscoelastic modeling process which is extremely time-consuming. The primary objective of this paper is to simulate and analyze creep responses of an asphalt mixture with a 3D microstructural-based DE viscoelastic model. A key task in this study is to develop an approach to reduce the computation time with the time-temperature superposition principle. Using this developed approach, creep compliance tests of an asphalt mixture under temperatures of 0, −10, and
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      Three-Dimensional Microstructural-Based Discrete Element Viscoelastic Modeling of Creep Compliance Tests for Asphalt Mixtures

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    http://yetl.yabesh.ir/yetl1/handle/yetl/66378
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    contributor authorZhanping You
    contributor authorYu Liu
    contributor authorQingli Dai
    date accessioned2017-05-08T21:55:04Z
    date available2017-05-08T21:55:04Z
    date copyrightJanuary 2011
    date issued2011
    identifier other%28asce%29mt%2E1943-5533%2E0000071.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/66378
    description abstractMicrostructural-based discrete element (DE) models have been used for a better understanding of asphalt pavement concrete since the late 1990s. Most current studies have been done with two-dimensional (2D) models. Moreover, elastic models are primarily employed for simulation of an asphalt matrix’s time-dependent behaviors. A 2D model is too simple to capture the complex microstructure of asphalt concrete, and an elastic model is not sufficient for simulating an asphalt matrix’s viscoelastic behaviors. Therefore, it is necessary to consider a three-dimensional (3D) viscoelastic model for microstructural-based DE simulation of asphalt mixture behaviors. Currently, it is easy to build such a 3D microstructural-based DE viscoelastic model using the existing techniques presented in the previous studies. A major challenge, however, is to reduce the computation time to run the 3D microstructural-based DE viscoelastic modeling process which is extremely time-consuming. The primary objective of this paper is to simulate and analyze creep responses of an asphalt mixture with a 3D microstructural-based DE viscoelastic model. A key task in this study is to develop an approach to reduce the computation time with the time-temperature superposition principle. Using this developed approach, creep compliance tests of an asphalt mixture under temperatures of 0, −10, and
    publisherAmerican Society of Civil Engineers
    titleThree-Dimensional Microstructural-Based Discrete Element Viscoelastic Modeling of Creep Compliance Tests for Asphalt Mixtures
    typeJournal Paper
    journal volume23
    journal issue1
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000038
    treeJournal of Materials in Civil Engineering:;2011:;Volume ( 023 ):;issue: 001
    contenttypeFulltext
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