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首页> 外文会议>Fourth European Symposium on Performance of Bituminous and Hydraulic Materials in Pavements, Apr 11-12, 2002, Nottingham, United Kingdom >Study of permanent deformations in asphalt concrete layers
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Study of permanent deformations in asphalt concrete layers

机译：沥青混凝土层永久变形的研究

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摘要

Rutting is a consequence of plastic deformation and consolidation of pavement layers and subgrade. The prediction of rutting evolution is a complex problem, requiring detailed knowledge of materials state, elastic and plastic deformability and viscosity of pavement materials. Several thickness design methods are generally based on limiting the vertical compressive elastic strain or stress in the top of the subgrade. Such procedures assume that surface plastic deformation is mainly due to the subgrade and do not consider deformations in the pavement upper layers. This article presents and compares rutting evolution of asphalt mixes in cored specimens using a laboratory LCPC traffic simulator and in a full-scale test section loaded by a linear traffic simulator. This study is part of a comprehensive research carried out in Brazil aiming at investigating the performance of asphalt concrete with both conventional and polymer modified binders.
机译：车辙是塑性变形以及路面层和路基固结的结果。车辙演变的预测是一个复杂的问题，需要详细了解材料状态，弹性和塑性变形能力以及路面材料的粘度。几种厚度设计方法通常基于限制路基顶部的垂直压缩弹性应变或应力。这样的程序假定表面塑性变形主要是由于路基，而不考虑人行道上层的变形。本文介绍并比较了使用实验室LCPC交通模拟器和线性交通模拟器加载的全尺寸测试部分中芯样中沥青混合料的车辙演变。这项研究是在巴西进行的一项全面研究的一部分，该研究旨在研究使用常规和聚合物改性的粘合剂的沥青混凝土的性能。

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