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Field Verification of Proposed Changes to the AASHTO R 30 Procedures for Laboroaty Conditioning of Asphalt Mixtures.
| 题名： | Field Verification of Proposed Changes to the AASHTO R 30 Procedures for Laboroaty Conditioning of Asphalt Mixtures. |
| 作者： | Newcomb, D.; Arambula-Mercado, E.; Martin, A. E.; Yuan, M.; Tran, N.; Yin, F. |
| 关键词： | Asphalt mixtures, Asphalt pavements, Rheological changes, Oxidation |
| 摘要： | Asphalt pavements are subject to rheological changes in the form of stiffening over time in response to oxidation. As asphalt mixtures are produced in plants, they are subjected to heat and air during mixing and storage. They are further aged as they are transported and placed at the pavement construction site. After this initial short-term aging at elevated temperatures, oxidation continues at a slower rate over the long term in the field. The stiffening and embrittlement resulting from oxidation increases more rapidly in warm climates than in cold climates. These rheological changes of the mixture can lead to cracking in various ways that may be related to climate or traffic factors or combinations of these effects. |
| 报告类型： | 科技报告 |
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