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Evaluation of Laboratory Testing Systems for Asphalt Mixture Design and Evaluation, Volume 1.
| 题名： | Evaluation of Laboratory Testing Systems for Asphalt Mixture Design and Evaluation, Volume 1. |
| 作者： | roque, r. birgisson, b. darku, d. drakos, c. a. |
| 关键词： | *Asphalt-pavements; *Pavement-tests; *Laboratory-tests.;Loads-Forces; Test-methods; Stress-analysis; Stresses-; Quality-control; Pavement-performance; Literature-review; Materials-tests; Data-analysis; Flexible-pavements. |
| 摘要： | Instability rutting is a major distress mode in hot mix asphalt (HMA) pavements that occurs when the structural properties of the compacted mix cannot resist near surface critical stress conditions caused by traffic loads. This mode of failure reduces serviceability and creates the hazard of hydroplaning because of accumulated water in the wheel-path ruts. Rehabilitation of this type of rutting usually involves asphalt concrete (AC) overlay or mill and replace. Currently, there is no reliable approach for instability-rutting assessment of HMA. The main objective of this study is to identify the loading, environmental, and construction (density) factors that are critical/essential in defining the mechanism of rutting. The identification of these conditions will logically lead to the development of a reliable physical model. The current version of the Asphalt Pavement Analyzer (APA) was selected for the experimental program; necessary modifications will be made to incorporate new testing procedures, which more realistically simulate traffic and environmental conditions existing on pavements. |
| 报告类型： | 科技报告 |
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