Effectiveness of Sustainable Asphalt Recycling Agents
| 项目名称： | Effectiveness of Sustainable Asphalt Recycling Agents |
| 摘要： | Studies have shown improved resistance to rutting as a result of incorporating Reclaimed Asphalt Pavement (RAP) in Hot-Mix Asphalt (HMA), they have indicated concerns over premature fatigue failure and thermal cracking. Hence, many Departments of Transportation (DOTs) do not allow or limit the use of any RAP in the surface course HMA. The use of Asphalt Recycling Agents (ARAs) has been introduced for reducing the brittleness of HMA containing RAP. As a result, the use of a higher amount of RAP in asphalt mixes without compromising their resistance to rutting, fatigue cracking, and thermal cracking, is made theoretically possible. However, the effectiveness of different ARAs in increasing the flexibility of asphalt binder and their effects on the long-term performance of HMA remain unknown. Mainly due to the lack of laboratory and field performance data, a widely accepted specification that can be used to select, approve, or evaluate ARAs is not available. To this end, the proposed study will determine how ARAs affect the rutting and cracking resistance of the asphalt mixes and binders containing RAP. This objective will be achieved by conducting a comprehensive laboratory testing program on asphalt binders and mixes. |
| 状态： | Active |
| 资金： | 134192 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Mountain-Plains Consortium |
| 项目负责人： | Tolliver, Denver |
| 执行机构： | Dept. of Civil and Environmental Engineering |
| 主要研究人员： | Ghabchi, Rouzbeh |
| 开始时间： | 20220524 |
| 预计完成日期： | 20230731 |
| 主题领域： | Highways；Materials；Pavements |
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