| Micromechanical Analysis on Viscoelasticity of Asphalt Mixtures |
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| 引用本文： | 薛国强,张裕卿,黄晓明.Micromechanical Analysis on Viscoelasticity of Asphalt Mixtures[J].公路交通科技,2010,4(2):38-43. |
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| 作者姓名： | 薛国强 张裕卿 黄晓明 |
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| 作者单位： | 1 Research Institute of Geotechnical Engineering,Hohai University,NanjingJiangsu210098,China;
2School of Transportation,Southeast University,NanjingJiangsu210096,China |
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| 基金项目： | Supported by
Chinese National Programs for High Technology Research an
d Development（No 2006AA11Z110） |
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| 摘 要： | Mori-Tanaka equivalent inclusion micromechanics theory was employed to investigate the viscoelasticity of asphalt mixture Asphalt mixture was regarded as composites which treated coarse aggregate as a rigid inclusion and the mixture of fine aggregate,filler and binder as viscoelastic matrix The constitutive relations of coarse aggregate inclusion and fine aggregate-filler-binder matrix were converted into elastic problems by Laplace transformation Then the Mori-Tanaka equivalent inclusion and average theory were used to deduce the
viscoelastic performance of asphalt mixture based on that of asphalt mortar in
Laplace space The result shows that (1) coarse aggregate inclusion can enhance
the viscoelastic performance of fine aggregate?filler?binder matrix and viscoelastic constitutive relation of asphalt mixtures can be expressed as the product of an enhancement coefficient of coarse aggregate and the viscoelastic constitutive relation of fine aggregate?filler?binder matrix; (2) the viscoelasticity of the complex asphalt mixture can be predicted from the viscoelasticity of the homogeneous fine aggregate?filler?binder matrix by using the nhancement coefficient; (3) the enhancement coefficient is higher than 10 and it rises with increasing of coarse aggregates' volumetric fraction or Poisson's ratio of fine aggregate-filler-binder matrix but the effect of the former is more important than that of the latter
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| 收稿时间： | 2008-07-01 |
Micromechanical Analysis on Viscoelasticity of Asphalt Mixtures |
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| XUE Guoqiang,ZHANG Yuqing,HUANG Xiaoming.Micromechanical Analysis on Viscoelasticity of Asphalt Mixtures[J].Journal of Highway and Transportation Research and Development,2010,4(2):38-43. |
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| Authors: | XUE Guoqiang ZHANG Yuqing HUANG Xiaoming |
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| Institution: | 1 Research Institute of Geotechnical Engineering,Hohai University,NanjingJiangsu210098,China;
2School of Transportation,Southeast University,NanjingJiangsu210096,China |
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| Abstract: | Mori-Tanaka equivalent inclusion micromechanics theory was employed to investigate the viscoelasticity of asphalt mixture Asphalt mixture was regarded as composites which treated coarse aggregate as a rigid inclusion and the mixture of fine aggregate,filler and binder as viscoelastic matrix The constitutive relations of coarse aggregate inclusion and fine aggregate-filler-binder matrix were converted into elastic problems by Laplace transformation Then the Mori-Tanaka equivalent inclusion and average theory were used to deduce the
viscoelastic performance of asphalt mixture based on that of asphalt mortar in
Laplace space The result shows that (1) coarse aggregate inclusion can enhance
the viscoelastic performance of fine aggregate?filler?binder matrix and viscoelastic constitutive relation of asphalt mixtures can be expressed as the product of an enhancement coefficient of coarse aggregate and the viscoelastic constitutive relation of fine aggregate?filler?binder matrix; (2) the viscoelasticity of the complex asphalt mixture can be predicted from the viscoelasticity of the homogeneous fine aggregate?filler?binder matrix by using the nhancement coefficient; (3) the enhancement coefficient is higher than 10 and it rises with increasing of coarse aggregates' volumetric fraction or Poisson's ratio of fine aggregate-filler-binder matrix but the effect of the former is more important than that of the latter |
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