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首页> 外文会议>Asphalt paving technology 2003 >Stress Dependent Behaviour of Asphalt Mixtures at High Temperatures
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Stress Dependent Behaviour of Asphalt Mixtures at High Temperatures

机译：高温下沥青混合料的应力相关行为

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In most of the commonly used design procedures thernbehaviour of asphalt mixtures is considered to be linear. Eitherrnlinear elastic or linear viscoelastic behaviour is assumed. It isrnhowever a well known fact that most of the road engineeringrnmaterials have a stress dependent behaviour, their behaviour isrnespecially influenced by the magnitude of the confiningrnstresses. This fact has not received the amount of attention as itrnshould have received and the research findings in this fieldrnhave hardly penetrated the common pavement engineeringrnfield. This is surprising because not taking into account thernstress dependent nature of asphalt mixtures at elevatedrntemperatures might result in significant errors in the predictionrnof stresses and strains in the bituminous layers and so inrnpavement predictions. This is especially the case if predictionsrnon surface cracking and , permanent deformation have to bernmade and to some extent it might also affect the quality of ourrnattempts to model ravelling of surface mixtures.rnThe research that is described in this paper deals with therndetermination and the modelling of the stress dependentrnbehaviour of asphalt mixtures. To this end five different typesrnof asphalt mixtures were subjected to a triaxial testing programrnin which the specimen were tested at various stress conditions,rntemperatures and loading frequencies.rnThe results of the testing program were used to model thernresilient modulus of the mixtures as a function of the appliedrnstresses. It appeared that a simple model could be developedrnthat showed the dependency of the resilient modulus on thernconfining stress. It was determined that the effects are notrnnegligible since the Mr values obtained from the
机译：在大多数常用的设计程序中，沥青混合物的行为被认为是线性的。假定线性弹性或线性粘弹性行为。但是，众所周知的事实是，大多数道路工程材料具有应力相关的行为，它们的行为受到约束应力的大小的特别影响。这个事实并没有引起应有的重视，并且该领域的研究成果几乎没有渗透到普通的路面工程领域。这是令人惊讶的，因为未考虑高温下沥青混合物的依赖于应力的性质可能会导致沥青层的预测应力和应变以及路面预测的重大误差。如果必须做出非表面裂纹和永久变​​形的预测，尤其是在这种情况下，并且在一定程度上也可能影响我们对表面混合物的破坏建模的尝试的质量。沥青混合料的应力依赖性行为。为此，对五种不同类型的rnof沥青混合物进行了三轴测试程序，该程序在不同的应力条件，温度和加载频率下对样品进行了测试。测试程序的结果用于模拟混合物的弹性模量随温度的变化。应用应力。似乎可以开发出一个简单的模型，该模型显示出弹性模量对约束应力的依赖性。确定的影响是不可忽略的，因为从

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  • 来源
    《Asphalt paving technology 2003》|2003年|p.1-26|共26页
  • 会议地点 Lexington KY(US);Lexington KY(US)
  • 作者

    Paul W. Antes; rnArthur E. van Dommelen; Lambert J.M. Houben; rnAndré A.A. Molenaar; Umesh Parajuli;

  • 作者单位

    Delft University of Technology, the Netherlands, Environmental Engineering, the Netherlands;

    rnRoads and Hydraulics Engineering Division,Ministry of Transport, the Netherlands, Environmental Engineering, the Netherlands;

    rnDelft University of Technology, the Netherlands, Environmental Engineering, the Netherlands;

    rnDelft University of Technology, the Netherlands, Environmental Engineering, the Netherlands;

    rnInternational Institute for Hydraulic Infrastructural and Environmental Engineering, the Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 路基、路面工程;
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