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首页> 外文期刊>Road materials and pavement design >Effect of State of Stress on the Resilient Modulus of Base Layer Containing Reclaimed Asphalt Pavement
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Effect of State of Stress on the Resilient Modulus of Base Layer Containing Reclaimed Asphalt Pavement

机译：应力状态对含再生沥青路面基层回弹模量的影响

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The use of Reclaimed Asphalt Pavement (RAP) as a base layer is a sustainable rehabilitation method and reduces local agency cost. Proper characterizations of the stress-dependent behavior of pavement layers have significant impact on the accuracy of pavement response predictions. This research examines which constitutive model is the most appropriate for predicting the resilient behavior of RAP as a base layer. The Resilient modulus (M_r) was examined in the laboratory for specimens containing different ratios of RAP and aggregate. The M_R of RAF/aggregate blends were higher, less sensitive to bulk stress and more sensitive to confining pressure compared to base aggregate. The MEPDG model that presented the nonlinear resilient behavior of unbound layers fitted the RAP material and was mathematically stable.
机译：将再生沥青路面（RAP）用作基础层是一种可持续的修复方法，并降低了当地机构的成本。路面层的应力相关行为的正确表征对路面响应预测的准确性有重要影响。这项研究检查了哪种本构模型最适合预测RAP作为基础层的弹性行为。弹性模量（M_r）在实验室中进行了测试，其中包含不同比例的RAP和骨料。与基础骨料相比，RAF /骨料混合物的M_R较高，对整体应力不敏感，对围压更敏感。提出未结合层的非线性弹性行为的MEPDG模型适合RAP材料，并且在数学上稳定。

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