原文传递
Experimental Investigation of Anisotropy in Asphalt Concrete.
| 题名： | Experimental Investigation of Anisotropy in Asphalt Concrete. |
| 作者： | Underwood-Shane; Heidari-AHomayoun; Guddati-Murthy; Kim-YRichard |
| 关键词： | Asphalt-concrete; Asphalt-rubber; Crack-initiation; Dense-graded-asphalt-mixtures; Fatigue-Mechanics; Fatigue-damage; Fatigue-tests; Gap-graded-asphalt; Genetic-algorithms; Hot-mix-asphalt; Mathematic |
| 摘要： | The primary purpose of this paper is to demonstrate the applicability of the three-stage Weibull equation to describe the fatigue damage process using flexural controlled deformation fatigue tests. A data set of 179 beam fatigue tests originally designed for exploring the fatigue performance of conventional dense graded asphalt concrete (DGAC) and asphalt-rubber hot-mix gap-graded (ARHM-GG) mixes was used to inspect the three-stage Weibull parameters that were estimated using a genetic algorithm. The tree-based regression-category models were then used to uncover the data structure of the estimated parameters as a function of material properties, conditioning methods, temperatures, compaction methods, and strain levels. In general, the three-stage Weibull equation provides satisfactory fitting results for the three-stage fatigue damage process occurring in a beam test. It was found that the tree-based models of three-stage Weibull parameters associated with the crack initiation stage were statistically adequate and reliable compared with the models of parameters related to the warm-up stage and the crack propagation stage. It might suggest that these crack initiation parameters are better indexes to assess the fatigue performance. |
| 总页数： | Transportation Research Record: Journal of the Transportation Research Board. 2005. (1929) pp227-237 (10 Fig., 3 Tab., 10 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- Mechanistic and Volumetric Properties of Asphalt Mixtures with Recycled Asphalt Pavement.
- LABORATORY STUDIES ON CEMENT-ASPHALT EMULSION COMPOSITE.
- Marginal Aggregates in Flexible Pavements: Background Survey and Experimental Plan.
- Experimental Validation of a Forward Looking Interferometer for Detection of Clear Air Turbulence due to Mountain Waves.
- Experimental Validation of a Forward Looking Interferometer for Detection of Clear Air Turbulence due to Mountain Waves.
- Investigation of AC Pavement Distress on Interstate 15 from Cajon Pass to the Nevada State Line; Final rept
检索历史
应用推荐
