| 高原寒冷地区温拌沥青混合料水稳性能分析 |
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| 引用本文： | 罗要飞,张争奇,张苛.高原寒冷地区温拌沥青混合料水稳性能分析[J].冰川冻土,2016,38(6):1592-1597. |
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| 作者姓名： | 罗要飞 张争奇 张苛 |
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| 作者单位： | 1. 长安大学 特殊地区公路工程教育部重点实验室, 陕西 西安 710064;
2. 阜阳师范学院 信息工程学院, 安徽 阜阳 236041 |
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| 基金项目： | 国家自然科学基金项目(51008031) |
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| 摘 要： | 为探讨高原寒冷地区温拌沥青混合料的水稳定性及性能衰变规律，采用多次冻融循环室内试验模拟混合料所处环境温差大、冻融频繁、气温低等特性，选取Aspha-min、Sasobit、Evotherm等不同类型温拌剂拌制混合料，通过冻融劈裂试验、冻融飞散试验等，分析热拌与温拌沥青混合料的水稳性能及其衰变趋势，定量说明频繁的冻融循环对其性能的影响。结果表明：气候因素长期作用下，热拌沥青混合料的水稳性能优于温拌沥青混合料；随着冻融循环次数的增加，混合料的水稳性能均逐渐下降，15~18次冻融循环后，水稳性能趋于稳定，建议在高寒地区选取15次冻融循环作用次数作为沥青混合料水稳性能评价的试验条件；在选取的3种温拌沥青混合料中，Aspha-min温拌沥青混合料的水稳性能最差。
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| 关 键 词： | 道路工程 温拌沥青混合料 水稳性能 冻融劈裂试验 飞散试验 |
| 收稿时间： | 2016-08-10 |
| 修稿时间： | 2016-11-19 |
Study of the water stability of warm mix asphalt mixture in cold plateaus |
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| LUO Yaofei,ZHANG Zhengqi,ZHANG Ke.Study of the water stability of warm mix asphalt mixture in cold plateaus[J].Journal of Glaciology and Geocryology,2016,38(6):1592-1597. |
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| Authors: | LUO Yaofei ZHANG Zhengqi ZHANG Ke |
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| Institution: | 1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University. Xi'an 710064, China;
2. College of Information Engineering, Fuyang Normal University, Fuyang 236041, Anhui, China |
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| Abstract: | In order to investigate the water stability and performance deterioration of warm mix asphalt (WMA) mixture in cold plateaus,the WMA mixture with Aspha-min,Sasobit and Evotherm were selected to do freezingthawing split test and scattering loss test.The differences of water stability for hot mix asphalt (HMA) and WMA mixture were compared.Finally,the impact of freezing-thawing cycles was quantitatively evaluated.The results show that the water stability of HMA is better than that of WMA mixture under the long-term impact of climate factors;the performance of WMA mixture decreases with freezing-thawing cycles,the water stability of WMA mixture remains stable after 15 ～ 18 freezing-thawing cycles,so 15 freezing-thawing cycles is taken as test criterion of performance evaluation for asphalt mixture in cold plateaus.The water stability of WMA mixture with Aspha-min is worst among all selected mixtures. |
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| Keywords: | road engineering warm mix asphalt water stability freezing-thawing split test scattering loss test |
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