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国际多尺度计算工程期刊

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ISSN 打印: 1543-1649

ISSN 在线: 1940-4352

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MULTISCALE VISCOELASTIC−VISCOPLASTIC MODEL FOR THE PREDICTION OF PERMANENT DEFORMATION IN FLEXIBLE PAVEMENTS

卷 10, 册 6, 2012, pp. 615-634
DOI: 10.1615/IntJMultCompEng.2012003471
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摘要

Creep/relaxation of asphalt consisting of the thermorheological binder material (bitumen), inclusions (aggregates), and air voids may lead to considerable permanent deformations (rutting). Although viscoelastic models are suitable to describe the asphalt behavior at low stress levels and in the low-temperature regime, material models taking plastic deformation into account are needed in order to capture the thermorheological behavior of asphalt at elevated temperature regimes. In this paper, the deformation behavior of asphalt is described by means of a creep/relaxation function, which, in a second step, is extended toward viscoplastic deformation. The underlying model parameters describing the thermorheological nature of asphalt are determined from a multiscale model considering five observation scales. The model, implemented into a Finite Element program, is used for determination of permanent deformations, as illustrated by the reanalysis of triaxial cyclic compression tests and the prediction of rutting in flexible pavements.

参考文献
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对本文的引用
  1. Cherif Rabeb, Eddhahak Anissa, Gabet Thomas, Hammoum Farhat, Neji Jamel, Effect of the processing conditions on the viscoelastic properties of a high-RAP recycled asphalt mixture: micromechanical and experimental approaches, International Journal of Pavement Engineering, 22, 6, 2021. Crossref

  2. El Sawda Christina, Fakhari‐Tehrani Fateh, Absi Joseph, Allou Fatima, Petit Christophe, Multiscale heterogeneous numerical simulation of asphalt mixture, Material Design & Processing Communications, 1, 3, 2019. Crossref

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