Chapter
Jun 2, 2014
Image-Based Modeling of the Dynamic Complex Modulus Test for Asphalt Concrete
Authors: Hao Ying, Mostafa A. Elseifi [email protected], Louay N. Mohammad [email protected], and Marwa Hassan [email protected]Author Affiliations
Publication: T&DI Congress 2014: Planes, Trains, and Automobiles
Abstract
Due to the limitations of the elastic continuum theory, pavement engineers have recently paid considerable attention to the use of advanced modeling techniques for simulating the realistic behavior of asphalt mixtures. The objective of this study is to develop a three-dimensional (3D), heterogeneous model to describe the response of asphalt mixtures in the dynamic complex modulus test using an x-ray computed tomography (CT) image-based FE modeling approach. Experimental testing results for two Superpave mixtures including one conventional hot-mix asphalt (HMA) and one warm-mix asphalt (WMA) mix were used to validate and to calibrate the developed FE models. Adequate agreement between laboratory-measured and model-predicted dynamic modulus test results was achieved. Results of the developed FE models at different temperatures indicated that most of the deformations during the dynamic modulus test are derived from the mastic. In addition, asphalt mastic had more influence than the aggregates on the results of the dynamic complex modulus test.
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© 2014 American Society of Civil Engineers.
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Published online: Jun 2, 2014
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Hao Ying
Louisiana State University, Department of Civil and Environmental Engineering, Baton Rouge LA 70803
Louisiana State University, Department of Civil and Environmental Engineering, Baton Rouge LA 70803. E-mail: [email protected]
Department of Civil and Environmental Engineering, Louisiana Transportation Research Center, Louisiana State University. E-mail: [email protected]
Louisiana State University, Department of Construction Management, Baton Rouge LA 70803. E-mail: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.