Evaluating Rutting and Stripping Potentials of Asphalt Mixes using Hamburg Wheel Tracking Device
| 项目名称： | Evaluating Rutting and Stripping Potentials of Asphalt Mixes using Hamburg Wheel Tracking Device |
| 摘要： | Asphalt pavement temperature in the southwest can reach one hundred degrees or more during hot summer days. At elevated temperatures, rutting is caused by large stresses in the upper portions of the asphalt layers under heavier traffic loading. Rutting has been a major issue of pavement failure throughout the southwest region. The rutting potentials of New Mexico's asphalt mixes are not known. Therefore, the development of a specification for selection of sufficiently rut- and stripping- resistant hot mix asphalt (HMA) mixes during the mix design stage, based on appropriate laboratory testing, is crucial. This study addresses the issue of repairing transportation infrastructure by preventing damage resulting from extreme weather conditions. The objective of this study is to develop a mix design specification that will reduce occurrences of placing rut- and stripping-prone mixes in roadway pavements. To achieve this objective, rutting and stripping potential of twenty HMA mixes collected from different parts of New Mexico will be determined using a Hamburg Wheel Tracking Device (HWTD) and dynamic shear rheometer. In addition, HWTD test results with be compared with the predicted rutting from pavement Mechanistic-Empirical (ME) Design models. Necessary binder testing will be conducted in the laboratory to generate data for the prediction models. In essence, the effort will focus on connecting mix design specification with Pavement ME design software to close the gap between mix design and pavement design. The expected outcome of this study is a specification that addresses rutting due to extreme temperatures that will be useful not only in New Mexico, but also in other areas with extreme hot climate. |
| 状态： | Active |
| 资金： | 250000.00 |
| 资助组织： | New Mexico Department of Transportation<==>Research and Innovative Technology Administration |
| 执行机构： | University of New Mexico, Albuquerque |
| 开始时间： | 20140801 |
| 实际结束时间： | 20160731 |
| 主题领域： | Design；Highways；Pavements；I30: Materials |
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