| 高粘度沥青性能评价指标与标准的试验 |
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| 引用本文： | 李立寒,耿韩,孙艳娜,孟庆楠.高粘度沥青性能评价指标与标准的试验[J].同济大学学报(自然科学版),2010,38(8):1155-1160. |
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| 作者姓名： | 李立寒 耿韩 孙艳娜 孟庆楠 |
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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,200092 |
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| 基金项目： | 住房和城乡建设部2008年科学技术资助项目 |
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| 摘 要： | 在排水性沥青混合料中,高粘度沥青性能的评价指标和技术要求备受关注.基于沥青材料的常规试验、毛细管粘度试验和动态剪切流变试验,以及排水性沥青混合料的车辙试验和肯塔堡飞散试验,筛选能够体现混合料抗车辙性能和耐久性的沥青性能指标.基于混合料的性能要求,确定高粘度沥青性能指标的技术要求.试验结果表明:沥青材料60℃零剪切粘度、软化点指标与混合料的动稳定度、飞散损失指标之间显著相关,适宜作为高粘度改性沥青性能评价指标;为保证排水性沥青混合料的动稳定度不低于4 000次/mm-1、飞散损失不大于15%的要求,沥青材料60℃零剪切粘度不应低于40 000Pa.s,软化点不应低于85℃.
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| 关 键 词： | 道路工程 高粘度改性沥青 评价指标与标准 60℃零剪切粘度 软化点 |
| 收稿时间： | 2009/9/26 0:00:00 |
| 修稿时间： | 2009/11/7 0:00:00 |
Viscosity Evaluating Indicators and Criteria of High-viscosity Modified Asphalt |
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| LI Lihan,GENG Han,SUN Yanna and MENG Qingnan.Viscosity Evaluating Indicators and Criteria of High-viscosity Modified Asphalt[J].Journal of Tongji University(Natural Science),2010,38(8):1155-1160. |
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| Authors: | LI Lihan GENG Han SUN Yanna and MENG Qingnan |
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| Institution: | Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China |
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| Abstract: | Evaluating indicators and criteria of high-viscosity modified asphalt are key factors that have significant influence on the performance of open-graded friction course.Tests for asphalt penetration and soften point,vacuum capillary viscometer test,dynamic shear rheological test,wheel tracking test and cantabro loss test are applied to select suitable indicators of asphalt binders for rutting resistance and durability evaluating of open-graded friction course.The test results and analysis show that zero shea... |
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