Long Term Performance and Benefits of Combined Balanced Mix Design and Chemical WMA Technology
| 项目名称： | Long Term Performance and Benefits of Combined Balanced Mix Design and Chemical WMA Technology |
| 摘要： | Asphalt mix durability has been a serious concern in Oklahoma for a long period of time. To address this and other issues (such as binder source variability, new binder modification materials, and recycled materials), balanced mix design (BMD) approach is being adopted by many state agencies. Different measures and additives have been tried to make the mixes pass rutting, cracking, and moisture damage requirements. One factor which has not been well investigated is chemical warm mix asphalt (WMA) technology when combined with BMD. Compared to hot mix asphalt (HMA), WMA is produced at the temperature of 275 F or lower. Consequently, significant amount of lighter oil component of asphalt binder is kept in the asphalt mix, which is beneficial to asphalt mix durability. However, combining BMD and chemical WMA technology has not been comprehensively evaluated in either laboratory or field. Thus, it is critical to evaluate the long-term performance and benefits of the combined BMD and chemical WMA technology, considering the potential of substantially extended pavement life with such technology. |
| 状态： | Active |
| 资金： | $ 300,000 |
| 资助组织： | Oklahoma Department of Transportation |
| 项目负责人： | Stephens, Teresa |
| 执行机构： | Oklahoma State University, Stillwater |
| 开始时间： | 20210122 |
| 预计完成日期： | 20230930 |
| 主题领域： | Highways；Pavements |
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