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Development of hot mix asphalt mixtures for Truckee Meadows area.

机译:为特拉基草甸地区开发热拌沥青混合料。

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摘要

The rutting and fatigue cracking are the two primary distress mechanisms that can be present in asphalt concrete under the combined action of traffic loads and environmental conditions. Rutting failure is caused by densification or plastic flow in Hot Mix Asphalt (HMA) layer.; This study was divided into to task, task 1: evaluation of the impact of rich-bottom design on the performance of HMA pavements, task 2: evaluate the impact of lime treatment on the raveling resistance of HMA pavements. The rich-bottom mix has binder content 0.5 % higher than the optimum binder content. This rich mix exhibited an improved resistance to fatigue cracking of the HMA pavement. The mean time it does not adversely affect the resistance to rutting. Under the task 2, the hydrated lime was added to the aggregate under different conditions. The resistance to moisture damage was evaluated in terms of the resilient modulus (MR) properties as a function of freeze-thaw cycles. The lime treatment of HMA mixtures significantly improved the resistance to moisture damage and there was no significant affects of marination time on MR properties. (Abstract shortened by UMI.)
机译:车辙和疲劳开裂是在交通荷载和环境条件共同作用下,沥青混凝土中可能存在的两个主要困扰机制。车辙失败是由热混合沥青(HMA)层中的致密化或塑料流动引起的。这项研究分为任务,任务1:评估高底设计对HMA路面性能的影响,任务2:评估石灰处理对HMA路面抗撕裂性的影响。浓底混合物的粘合剂含量比最佳粘合剂含量高0.5%。这种丰富的混合物表现出对HMA路面疲劳龟裂的改善的抵抗力。平均而言,它不会不利地影响车辙。在任务2中,在不同条件下将熟石灰添加到集料中。根据弹性模量(MR)性质作为冻融循环的函数来评估耐湿气破坏性。 HMA混合物的石灰处理显着提高了对水分破坏的抵抗力,并且腌制时间对MR性能没有显着影响。 (摘要由UMI缩短。)

著录项

  • 作者

    Manoharan, Selvendran.;

  • 作者单位

    University of Nevada, Reno.;

  • 授予单位 University of Nevada, Reno.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2006
  • 页码 133 p.
  • 总页数 133
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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