Asphalt Binder Rheological Characterization for Extreme Climate Events
| 项目名称： | Asphalt Binder Rheological Characterization for Extreme Climate Events |
| 摘要： | Sustained extreme (hot and cold) climate spells result in significant pavement distresses and they appear to occur with increasing frequency. Asphalt is significantly affected by this problem but existing test protocols have not been developed with such extreme conditions in mind. This research will (1) analyze climate data to predict future weather patterns, (2) relate climate to pavement condition, and (3) use techniques of molecular modeling to elucidate the relationship between asphalt chemical composition and rheological properties. The effect of modifiers on asphalt viscoelastic properties will be of particular focus. Research findings will help build highways that better adapt to new climate realities. The outcomes of this 2-year research will be (i) development of new asphalt modification protocols, and (ii) an updated testing protocol that will evaluate the suitability of modified asphalts for extreme climate scenarios. This research approach will comprise of the following tasks: (1) Review of literature on climate pattern predictions and how climate change will impact highway transportation infrastructure; (2) Laboratory testing of asphalt binders to assess properties with regard to extreme climate events; (3) Determine desired threshold binder property values to withstand possible extreme climate events; and (4) Molecular modeling to elucidate the relationship between asphalt chemical composition, modifier type/dosage/blending procedure and the rheological properties of the binder. |
| 状态： | Active |
| 资金： | 134021.00 |
| 资助组织： | Texas Department of Transportation<==>Research and Innovative Technology Administration |
| 执行机构： | Texas Tech University, Lubbock |
| 开始时间： | 20140801 |
| 实际结束时间： | 20160731 |
| 主题领域： | Design；Highways；Maintenance and Preservation；Pavements；I30: Materials |
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