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原文传递 Marginal Aggregates in Flexible Pavements: Background Survey and Experimental Plan.

题名：	Marginal Aggregates in Flexible Pavements: Background Survey and Experimental Plan.
作者：	Rollings, Raymond S.;Ahlrich, Randy C.;
关键词：	LANDING FIELDS, PAVEMENTS, AIRCRAFT LANDINGS, AIRPORTS, ASPHALT, CONCRETE, CONSTRUCTION, DEFORMATION, ENGINEERING, LABORATORIES, MATERIALS, MIXTURES, MODIFICATION, PHASE, QUALITY, SHAPE, STATE OF THE ART, TEST AND EVALUATION, UTILIZATION, WORK, RUNWAYS, CIVIL ENGINEERING, FIELD TESTS, SURVEYS.
摘要：	The purpose of this study is to evaluate the utilization of substandard or marginal aggregates in flexible pavement construction of airport pavements. This investigation was undertaken to evaluate the effects of using lower quality aggregates such as rounded uncrushed gravels and sands on the rutting of flexible pavements. The scope of this research study included a review of available literature and existing data (Phase T), a laboratory evaluation organized to determine the effects of marginal aggregates and potential techniques to upgrade these substandard materials (Phase II), and a field evaluation involving test sections utilizing the most promising techniques (Phase III). This report provides a review of existing data and literature concerning aggregate properties and their influence on the performance of base course materials and asphalt concrete mixtures. This report also discusses the experimental plan for this research study and provides a discussion and description of the state-of-the-art laboratory testing equipment that is being used to evaluate the engineering properties of the marginal aggregates. A summary and schedule of the remaining work has been included. Airfield pavements, Gyratory compaction, Asphalt concrete, Marginal aggregate, Asphalt modification, Pavement deformation, Fractured faces, Shape, Gradation, Substandard materials.
总页数：	58
报告类型：	科技报告