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Review of the Fundamentals of Asphalt Oxidation: Chemical, Physicochemical, Physical Property, and Durability Relationships.
| 题名： | Review of the Fundamentals of Asphalt Oxidation: Chemical, Physicochemical, Physical Property, and Durability Relationships. |
| 作者： | J. C. Petersen; |
| 关键词： | oxidation,asphalt,asphalt oxidation kinetics;reviews, durability, molecular interactions, physical properties, oxidation mechanisms, characteristics, chemical composition; |
| 摘要： | Oxidative aging of asphalt is of practical significance to the understanding of pavement service life. This report is a synopsis of current physicochemical understanding of the chemistry, kinetics, and mechanisms of asphalt oxidation and its influence on asphalt durability. The oxidative behavior of asphalt is thought to be one of the critical factors contributing to the performance of hot-mix asphalt (HMA) pavements. The content of this review reflects more than half a century of research work on the physicochemical consequences of oxidative aging and its effects on the fundamental rheological properties of the oxidized asphalt. Emphasis is made on how the component fractions of asphalt behave under oxidation, including a consideration of the effects of the mineral aggregate and metals contained in asphalts. A section of the Circular reviews recent data and offers further insight on pavement aging as a function of air-void content of the mixture, temperature, and pavement depth and how oxidative hardening contributes to decreasing pavement service life. Civil engineers, chemists, and asphalt technologists developing fundamental pavement performance models will find this Circular to be of interest. Professionals in owner agencies will have at their fingertips a useful handbook to understand the subtleties of asphalt oxidation and how it contributes to distresses in an HMA pavement. Beginning students of asphalt technology will find this a welcome review with many references to original work. The review is paramount today as the HMA industry transitions to the new technologies of warm-mix asphalt (WMA) produced at lower temperatures. / Supplementary Notes: Sponsored by Transportation Research Board, Washington, DC. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A06/MF A06 / NTIS In-house Control Codes: nastrb;12111,1101 |
| 报告类型： | 科技报告 |
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