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The Use of Simple Performance Tests in the Development of Rutting Resistant Criteria for Superpave Mixes in Canada Stage 1

机译:利用简单的性能测试在加拿大第1阶段SuperPave混合标准的发展中的开发

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The use of Superpave mixes has become popular over the past several years in Canada. A joint research study was undertaken to develop rutting resistance criteria for Superpave and other asphalt mixes used in Canada. The study used the new Simple Performance Test (SPT) and an accelerated laboratory wheel rutting resistance test. The SPT is included in the American Association of State Highway and Transportation Officials (AASHTO) new Mechanistic-Empirical Pavement Design Guide (AASHTO 2002) as a means of asphalt mix characterization. Two surface course asphalt mixes and two binder course mixes from projects across Canada were selected for the study. These mixes span a wide range of applications from high traffic freeways to low volume municipal roads. This paper presents the findings from Stage 1 of the study that included dynamic modulus testing of all four mixes, extensive AASHTO 2002 analysis, and accelerated rutting resistance testing in the Hamburg Wheel Rut Tester. The paper emphasizes the necessity for careful calibration of the models used in the new mechanistic-empirical method of pavement design and the need for accelerated performance testing at the mix design stage.
机译:在加拿大的过去几年中,超级波混合物的使用已经流行。开展了联合研究研究,为加拿大使用的超级粘剂和其他沥青混合物产生了抵抗抵抗标准。该研究采用了新的简单性能测试(SPT)和加速的实验室车轮轨道抵抗试验。 SPT包含在美国国家公路和运输官员(AASHTO)新的机制 - 经验路面设计指南(AASHTO 2002)中的沥青混合表征的手段。两个表面疗程沥青混合物和两种粘合剂课程从加拿大跨越项目的混合进行了研究。这些混合物跨越广泛的应用高速公路到低批量市道路。本文介绍了研究阶段1的研究结果包括所有四种混合物的动态模量测试,广泛的AASHTO 2002分析,以及汉堡轮车辙测试仪的加速车辙抗性测试。本文强调必须仔细校准新的机械设计的模型,以及在混合设计阶段进行加速性能测试的需求。

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