| 摘要: |
| 通过室内试验研究了回收沥青混合料（RAP）掺量(质量分数)对Evotherm温拌再生沥青混合料高温稳定性、低温性能、水稳定性及疲劳性能的影响.结果表明:采用Evotherm温拌技术可将RAP掺量提高到50%；温拌再生沥青混合料的高温稳定性、水稳定性及低温性能均随RAP掺量的增加先升后降,且在RAP掺量为30%～40%时出现峰值；疲劳性能随RAP掺量的增加逐渐降低,且应变水平越高降低幅度越大；温拌再生沥青混合料的高温稳定性、水稳定性较热拌再生沥青混合料差,疲劳性能优于热拌再生沥青混合料；在相同RAP掺量下,温拌再生沥青混合料与热拌再生沥青混合料的低温性能相当. |
| 关键词: 道路工程 回收沥青混合料 温拌沥青 高温稳定性 水稳定性 疲劳性能 |
| DOI：103969/j.issn1007 9629201601035 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51508428)；湖北省自然科学基金计划项目资助（2014CFB820）；湖北省教育厅科学研究计划项目（B2014092） |
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| Performance of Warm Mix Asphalt Mixture Containing Different RAP Contents |
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TANG Wen1, SHENG Xiaojun2, XIE Xufei1, ZHOU Xinglin1
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1.School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2.School of Architecture Engineering, Nantong University, Nantong 226019, China
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| Abstract: |
| Through indoor experiments, rutting resistance, low temperature performance, moisture sensitivity and fatigue resistance of WMA containing different RAP contents ranging from 0% to 50% were researched. The results show that, the RAP mass content in asphalt mixture could increase to 50% when Evotherm WMA technology is introduced; for WMA containing RAP, the rutting resistance, moisture sensitivity and low temperature performance are improved when the RAP mass content increases to 30%40% and then degrades; the fatigue resistance is degraded gradually when RAP content increases, and the performance is degraded much more seriously under higher strain.The rutting resistance and moisture sensitivity of WMA mixtures containing RAP are inferior to HMA containing RAP, the fatigue resistance of WMA containing RAP is superior to HMA containing RAP, and the low temperature performance of WMA and HMA under same RAP mass content is relatively close. |
| Key words: road engineering reclaimed asphalt pavement(RAP) warm mix asphalt(WMA) rutting resistance moisture sensitivity fatigue resistance |
