| 热拌沥青混合料筛分 |
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| 引用本文： | 李杰,雷勇,胡小弟.热拌沥青混合料筛分[J].武汉工程大学学报,2014(11):17-22. |
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| 作者姓名： | 李杰 雷勇 胡小弟 |
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| 作者单位： | 武汉工程大学资源与土木工程学院 |
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| 基金项目： | 致谢感谢武汉工程大学交通研究中心对试验的设备及技术支持,感谢大悟县公路局提供试验材料! |
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| 摘 要： | 用由马歇尔设计法得到AC-13与AC-20的沥青混合料,搅拌后将混合料依次通过孔径为16mm、13.2mm、4.75mm的方孔筛进行筛分;对筛分得到的四档沥青混合料按照一定比例进行重新分配得到新的AC-13(n)与AC-20(n).通过燃烧法试验测定AC-13(n)与AC-20(n)的沥青含量及其矿料级配曲线.分别对比AC-13(n)、AC-20(n)与AC-13、AC-20的沥青含量和矿料级配曲线变化情况,结果表明:通过对热拌沥青混合料筛分得到的沥青混合料,在沥青含量和矿料级配曲线方面均符合规范规定的范围,且偏离最初的设计很小,因此,热拌沥青混合料的筛分是可行的.
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| 关 键 词： | 热拌沥青混合料 筛分 沥青含量 矿料级配曲线 |
Sieving of hot mix asphalt |
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| Authors: | LI Jie LEI Yong HU Xiao-di |
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| Affiliation: | (School of Resources and Civil Engineering,Wuhan Institute of Technology, Wuhan 430074,China) |
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| Abstract: | Two HMAs ,i .e .,AC‐13 and AC‐20 were prepared by Marshall method .They were mixed together and sieved by different size sieves ,i .e .,16 mm ,13 .2 mm and 4 .75 mm so that four sieved hot mix asphalt mixtures were produced .Reassigned those four sieved hot mix asphalt mixtures and two new HMAs ,namely AC‐13（n） and AC‐20（n） were obtained .By asphalt burner oven ,AC‐13（n） and AC‐20（n） were burned for the asphalt content and aggregate gradation testing .The testing result shows that ,from hot‐mix asphalt bitumen obtained by sieving mix ,asphalt content and aggregate gra‐datin curves are in line with the range of specification for the two new HMAs （i .e .obtained HMAs by sieving） ,the aggregate gradations still match respective limited of specification ,and the asphalt con‐tents have very small change compared with those designed by Marshall method;so it implies that the hot‐mix asphalt screening is feasible . |
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| Keywords: | hot mix asphalt sieving asphalt content aggregate gradation curve |
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