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PERMANENT DEFORMATION AND FATIGUE EVALUATION OF ASPHALT CONCRETE MIXES

机译:沥青混凝土混合料的永久变形和疲劳评估

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摘要

This paper briefly summarizes experiences with the use of SHRP-developed shear and fatigue test equipment for mix analysis and design over about an 8-year period since their development. A summary of experience with the shear test includes: 1) mix designs for two Interstate pavements; 2) analysis of mix rutting in accelerated pavement tests; and 3) mix design criteria development from a forensic study of pavement performance. Similarly, for the fatigue test, examples referred to include: 1) mix cracking in accelerated test pavements; 2) structural section design for an Interstate pavement subjected to 200 x 10~6 ESALs; and 3) evaluation of fatigue criteria in current PG specifications. Guidelines, based on these experiences, are provided for the use of these tests in mix design and structural pavement design and analysis and include specific recommendations for test specimen preparation.
机译:本文简要总结了自SHRP开发的剪切和疲劳测试设备在开发以来约8年的时间里使用经验进行混合分析和设计的经验。剪切试验的经验总结包括:1)两个州际公路的混合料设计; 2)在加速路面测试中对混合车辙的分析;和3)结合路面性能的法医研究制定设计标准。类似地,对于疲劳测试,涉及的示例包括:1)加速测试路面中的混合裂缝; 2)经受200 x 10〜6 ESAL的州际公路的结构截面设计; 3)评估当前PG规范中的疲劳标准。根据这些经验,提供了在混合料设计,结构人行道设计和分析中使用这些试验的指导原则,并包括有关试样制备的具体建议。

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