| 在役乳化沥青冷再生混合料的疲劳性能 |
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| 引用本文： | 孙立军,程怀磊,刘黎萍,曹巍.在役乳化沥青冷再生混合料的疲劳性能[J].同济大学学报(自然科学版),2017,45(11):1648-1654. |
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| 作者姓名： | 孙立军 程怀磊 刘黎萍 曹巍 |
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| 作者单位： | 同济大学 道路与交通工程教育部重点实验室，上海 201804,同济大学 道路与交通工程教育部重点实验室，上海 201804,同济大学 道路与交通工程教育部重点实验室，上海 201804,同济大学 道路与交通工程教育部重点实验室，上海 201804 |
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| 基金项目： | 交通运输部建设科技项目(2014318223010);江西省交通厅项目(2013C0012) |
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| 摘 要： | 通过应力控制下的劈裂疲劳试验,分析了现场服役多年的乳化沥青冷再生混合料及室内新成型的乳化沥青冷再生混合料劲度模量衰减特征以及2类混合料疲劳破坏阶段的黏弹性特征;结合损伤分析,提出了在役冷再生沥青混合料和新成型冷再生混合料疲劳破坏准则;对比了不同车道的在役冷再生混合料和新成型冷再生混合料的疲劳寿命,结果表明,现场实际轴载作用次数的增加会导致冷再生混合料剩余疲劳寿命的降低,冷再生混合料在使用中存在疲劳性能增长过程.
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| 关 键 词： | 乳化沥青 冷再生混合料 劲度模量 疲劳性能 |
| 收稿时间： | 2017/1/17 0:00:00 |
| 修稿时间： | 2017/9/26 0:00:00 |
Fatigue Characteristics of In situ Emulsified Asphalt Cold Recycled Mixtures |
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| SUN Lijun,CHENG Huailei,LIU Liping and CAO Wei.Fatigue Characteristics of In situ Emulsified Asphalt Cold Recycled Mixtures[J].Journal of Tongji University(Natural Science),2017,45(11):1648-1654. |
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| Authors: | SUN Lijun CHENG Huailei LIU Liping and CAO Wei |
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| Institution: | Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China,Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China,Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China and Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China |
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| Abstract: | The splitting fatigue test was conducted on in situ emulsified asphalt cold recycled (EACR) mixture to inspect its attenuation characteristics of stiffness modulus as well as viscoelastic properties. The laboratory new processing EACR mixture was also tested for comparison. The failure criterions of two kinds of EACR mixtures were established based on fatigue testing results using damage mechanics theory. Moreover, Fatigue testing results indicate that more traffic loads will lead to more reduction in fatigue life of in situ EACR mixture and the fatigue life EACR mixture improves after being placed in service. |
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