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原文传递 Evaluation and Performance Based Mix Design of Rubber Modified Mixtures. Laboratory Evaluation of Asphalt Concrete Mixtures Using Waste Tires; Final rept

题名：	Evaluation and Performance Based Mix Design of Rubber Modified Mixtures. Laboratory Evaluation of Asphalt Concrete Mixtures Using Waste Tires; Final rept
作者：	Goulias, D. G.; Ali, A. H. M.
关键词：	Flexible pavements; Asphalt; Tire recycling; Concretes; Mechanical properties; Design criteria; Waste product utilization; Performance evaluation; Construction materials; Tests; Temperature; Loads(Forces)
摘要：	New Jersey Department of Transportation is being investigating the use of rubber modified materials over the last years with the design and use of dense and gap graded mixtures, and in some cases the incorporation of RAP materials, in selected projects. While the short term field performance of these materials is being satisfactory, their long term performance is unknown. These mixtures were designed with the traditional Marshall mixture design method, and thus is was not considered design criteria related to mixture behavior and performance into mixture selection. The main objective of this study is the development of a mixture design methodology for rubber modified materials that considers mixture behavior and performance. In order to achieve this objective a laboratory investigation able to evaluate mixture properties that can be related to mixture performance, (in terms of rutting, low temperature cracking, and fatigue), and simulating the actual field loading conditions that the material is being exposed to, was conducted. The possibility of coupling the traditional Marshall mix design method with parameters related to mixture behavior and performance was investigated since this technique is being used over the years by the agency, and the necessary testing apparatus is available to both the agency and material laboratories. The SHRP SUPERPAVE mix design methodology was reviewed and considered in this study for the development of an integrated performance based design procedure. However, its applicability and use on routine bases was not considered at this time since it requires specific equipment with ongoing evaluation for its repeatability and precision. Finally, for the conduct of this investigation materials and mixtures used by NJDOT in rubber modified paving projects were used.
总页数：	260p
报告类型：	科技报告