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Impact of Asphalt Thickness on Pavement Quality: A Synthesis of Highway Practice.
| 题名： | Impact of Asphalt Thickness on Pavement Quality: A Synthesis of Highway Practice. |
| 作者： | McDaniel, R. S. |
| 关键词： | Highway research programs, Asphalt Thickness, Synthesis, Pavement quality, Highway practice, Resultant asphalt pavement, National Cooperative Highway Research Program (NCHRP), Federal Highway Administration (FHWA) |
| 摘要： | The objective of NCHRP Synthesis 537 is to document agency policy for lift thickness and minimum compaction requirements on resultant asphalt pavement quality. To achieve expected pavement performance, it is important that Highway PracticHighway Practichave adequate density. A critical factor in achieving this density is the ratio of lift thickness to nominal maximum aggregate size (t/NMAS). The information in this report can help make agencies aware of a range of practices other agencies use to achieve a desired t/NMAS ratio, ensuring that density of AC is adequate to meet expected pavement performance. The information contained in this synthesis was obtained using three sources. First, a literature review was conducted on the state of practice of achieving desired lift thickness. Second, a survey was distributed to state departments of transportation as well as transportation agencies in Canadian provinces to determine their current mix type selection and pavement lift thickness standards and how they relate to structural design and construction specifications. Finally, follow-up interviews were conducted with agencies in selected states. Rebecca S. McDaniel of Purdue University collected and synthesized the information and wrote the report. The members of the topic panel are acknowledged on page iv. This synthesis is an immediately useful document that records the practices that were acceptable within the limitations of the knowledge available at the time of its preparation. |
| 报告类型： | 科技报告 |
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