| 不同粘度等级的再生剂对老化沥青再生性能的影响 |
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| 引用本文： | 况栋梁,余剑英,蔡正文,宋献东.不同粘度等级的再生剂对老化沥青再生性能的影响[J].石油沥青,2010,24(6):13-17. |
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| 作者姓名： | 况栋梁 余剑英 蔡正文 宋献东 |
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| 作者单位： | [1]武汉理工大学材料学院,武汉430070 [2]湖北省赤壁市公路管理局,赤壁437300 |
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| 基金项目： | 国际合作项目，湖北省创新团队项目，湖北省公路局科技攻关项目 |
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| 摘 要： | 研究了不同粘度等级的再生剂对老化沥青再生性能的影响。结果表明，不同粘度等级的再生剂对老化沥青的再生效果有明显差异。粘度低的再生剂对老化沥青软化点的降低、延度的提高、针入度的增大和粘度的减小更为明显。然而，对于轻度老化沥青，低粘度再生剂使其软化点和粘度降低幅度较大，对再生沥青的高温性能影响明显，因此轻度老化沥青宜选用粘度较高的再生剂，而重度老化沥青应选用低粘度的再生剂。
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| 关 键 词： | 老化沥青 再生剂 粘度 |
Effect of Rejuvenator Agent with Different Viscosity Grades on Aged Bitumen |
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| Kuang Dongliang,Yu Jianying,Cai Zhengwen,Song Xiandong.Effect of Rejuvenator Agent with Different Viscosity Grades on Aged Bitumen[J].Petroleum Asphalt,2010,24(6):13-17. |
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| Authors: | Kuang Dongliang Yu Jianying Cai Zhengwen Song Xiandong |
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| Affiliation: | Kuang Dongliang Yu Jianying Cai Zhengwen Song Xiandong 1 School of Materials Science and Engineering, Wuhan University of Technology ( Wuhan 430070, China) 2 Chibi Highway Administration Bureau of Hubei province ( Chibi 437300, China) |
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| Abstract: | Effect of rejuvenators with different viscosity on properties of aged bitumen was investigated. The results indicated that rejuvenators with different viscosity show different effect on the properties of recycling aged bitumen. Rejuvenator with low viscosity was more effective in decreasing softening point and viscosity, as well as increasing penetration and ductility. However, low viscosity rejuvenator agent can make the softening point and viscosity of slightly aged bitumen decrese sharply, which has negative influence on the high - temperature properties of the recycled asphalt mixture. Therefore, the rejuvenator for reclaim of slightly aged bitumen should be of high viscosity, whereas the rejuvenator for reclaim of severally aged bitumen should be of low viscosity. |
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| Keywords: | aged bitumen rejuvenator viscosity |
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