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ASPHALT MIXTURE LABORATORY TESTS.
| 题名： | ASPHALT MIXTURE LABORATORY TESTS. |
| 作者： | Hahtala-M; Saarinen-L; Spoof-H; Halonen-P |
| 关键词： | BITUMINOUS-MIXTURES; TRACKING-WHEEL; FATIGUE-TESTS; LABORATORY-TESTS; RUTTING- |
| 摘要： | Technical Research Center of Finland (VTT) conducted wheel tracking and fatigue tests of Minnesota Road Research Project (Mn/ROAD) bituminous mixtures as a result of the cooperation between Finnish National Road Administration (FinnRA) and Minnesota Department of Transportation (Mn/DOT). FinnRA funded the tests. Mn/ROAD, Mn/DOT's pavement testing facility, sent raw materials (aggregates and binders) and ready-made mixtures. In spite of the differences between Mn/ROAD and Finnish mixtures, the rutting of Mn/ROAD mixture measured by wheel tracking device was similar if compared to a dense graded mixture with binder of similar penetration. The Mn/ROAD mixture with low stiffness binder deformed much more and tested outside the Finnish specifications. However, it may be successful in Minnesota because of smaller axle loads. The fatigue properties in strain control tested about the same as corresponding Finnish bituminous mixtures. However, the behavior in stress mode was different. The Mn/ROAD fatigue line tested flatter than any Finnish bituminous mixture with straight run bitumen, and only some with polymer modified bitumen were similar. The report recommends careful analysis of the fatigue properties of Mn/ROAD pavement performance. |
| 总页数： | 1997/02. pp38 (17 Fig., 10 Tab., 2 Ref.) |
| 报告类型： | 科技报告 |
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