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The use of asphalt low shear viscosity to predict permanent deformation performance of asphalt concrete

机译:利用沥青低剪切粘度预测沥青混凝土的永久变形性能

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摘要

The permanent deformation performance of asphalt concrete is strongly dependent on the rheological properties of the asphalt binder. It has been recognized that the asphalt's low shear viscosity (LSV) characterizes the mixture's rutting resistance. At the same time, the pavement temperature is one of the main factors that significantly affect the mixture performance. In this work the rutting performance of mixtures prepared with the same aggregate gradation and different binders [conventional (C), multigrade (M) and polymer modified (PM) asphalts] were evaluated by using wheel tracking tests (WTT) performed at 50, 60, 70 and 80°C; in parallel, the LSV of asphalts were measured at the same temperatures. The relationship between the asphalt's LSV and rutting, to predict asphalt mixture performance, was discussed and a criterion to consider the effect of LSV is proposed.
机译:沥青混凝土的永久变形性能在很大程度上取决于沥青粘合剂的流变性能。已经认识到,沥青的低剪切粘度(LSV)表征了混合物的耐车辙性。同时,路面温度是显着影响混合料性能的主要因素之一。在这项工作中,通过在50、60进行的车轮跟踪测试(WTT)评估了具有相同骨料级配和不同粘合剂[常规(C),多级(M)和聚合物改性(PM)沥青)的混合物的车辙性能。 ,70和80°C;平行地,在相同温度下测量沥青的LSV。讨论了沥青的LSV与车辙之间的关系,以预测沥青混合料的性能,并提出了考虑LSV影响的标准。

著录项

  • 来源
    《Materials and structures》 |2011年第7期|p.1241-1248|共8页
  • 作者单位

    CONICET, LEMIT-CIC, Area Tecnologia Vial, 52 entre 121 y 122, 1900 La Plata, Argentina;

    CONICET, LEMIT-CIC, Area Tecnologia Vial, 52 entre 121 y 122, 1900 La Plata, Argentina;

    CONICET, LEMIT-CIC, Area Tecnologia Vial, 52 entre 121 y 122, 1900 La Plata, Argentina;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    low shear viscosity (lsv); rutting; asphalt concrete performance;

    机译:低剪切粘度(lsv);车辙沥青混凝土性能;

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