Asphalt Fatigue Resistance Evaluation Method Based on the Rheology
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摘要: 进行了8种沥青材料的动态剪切流变试验和“时间-扫描”试验以及对应的沥青混合料疲劳试验,研究适于评价沥青疲劳性能的试验方法和指标.分析表明,与动态剪切试验相比,“时间-扫描”试验适于沥青(不包括如橡胶沥青等采用较大粒径改性剂的改性沥青)疲劳性能的评价;并提出了将“简化耗散能”用于“时间-扫描”试验数据分析和沥青疲劳性能评价的指标。
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关键词:
- 道路工程 /
- 沥青疲劳性能评价方法 /
- 时间-扫描试验 /
- 流变学
Abstract: Asphalt anti-fatigue performance evaluation method and index were studied,based on dynamic shear test and time-sweep test of 8 kinds of asphalt and fatigue test of mixture by these asphalt.Compared with dynamic shear test,time-sweep test is suitable for asphalt fatigue performance evaluation.But time-sweep test is not suitable for performance evaluation of modified asphalt which uses large particle size modifiers,such as asphalt rubber.Reduced dissipated energy ratio was recommended as the index to analyze data of time-sweep test and to evaluate asphalt fatigue resistance. -
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