| 引用本文: | 孙勇,纪伦,孙维刚,刘海权,李俊,谭忆秋.沥青混凝土结构表征与参数构建[J].哈尔滨工业大学学报,2020,52(3):38.DOI:10.11918/201810183 |
| SUN Yong,JI Lun,SUN Weigang,LIU Haiquan,LI Jun,TAN Yiqiu.Characterization and parameter construction of asphalt concrete structure[J].Journal of Harbin Institute of Technology,2020,52(3):38.DOI:10.11918/201810183 |
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| 沥青混凝土结构表征与参数构建 |
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孙勇1,纪伦1,孙维刚2,刘海权1,3,李俊1,4,谭忆秋1
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(1.哈尔滨工业大学 交通科学与工程学院, 哈尔滨 150090;2.黑龙江省八达路桥建设有限公司, 哈尔滨 150076; 3.吉林省交通规划设计院, 长春 130021;4.中建丝路建设投资有限公司, 西安 710075)
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| 摘要: |
| 为研究沥青混凝土的结构,丰富表征沥青混凝土结构的参数,首先对常见的体积参数进行总结,分析沥青混凝土组成成分和结构特点. 然后,从不同角度出发构建新的体积参数,并对参数进行分类和分析. 最后,在AC-16级配范围内通过改变细集料的比重得到了5个不同级配,同时设置4.2%、4.7%、5.2%（沥青占混合料的质量比）3种不同沥青用量,研究沥青用量对参数的影响,根据现行沥青混合料试验规程要求制作标准马歇尔试件,并进行体积指标的测定,通过计算得到构建的参数,并分析参数随级配及沥青用量的变化规律. 结果表明:体积参数随着沥青混合料的级配、沥青用量的改变有着明显的变化. 其中,沥青类参数VA、VM、db与混合料中的沥青用量有明显的线性关系,同时VM还与Vf有关；空隙类参数VMA、VK、VV随Vf的增加先减小后增大. 只改变沥青用量时,VMA、VK、VV隨沥青用量的增加而减小；集料类参数G、Vc、Vf、Vf /(1-c)、FBV、F1、F2、Vc/f与混合料中粗细集料以及矿粉的比例有关. |
| 关键词: 沥青混凝土 结构表征 参数构建 级配 性能 |
| DOI：10.11918/201810183 |
| 分类号:U414 |
| 文献标识码:A |
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| Characterization and parameter construction of asphalt concrete structure |
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SUN Yong1,JI Lun1,SUN Weigang2,LIU Haiquan1,3,LI Jun1,4,TAN Yiqiu1
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(1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. Heilongjiang Bada Road & Bridge Construction Co., Ltd., Harbin 150076, China; 3. Jilin Traffic Planning and Design Institute, Changchun 130021, China; 4. Zhongjian Silk Road Construction Investment Co., Ltd., Xi’an 710075, China)
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| Abstract: |
| To study the structure of asphalt concrete and enrich the characterization of asphalt concrete structure parameters, common volume parameters were summarized to analyze the composition and structural characteristics ofz asphalt concrete. Then, new volume parameters were constructed from different angles, and the parameters were classified and analyzed. Finally, within the scope of the AC-16 grading, five different gradations were obtained by changing the proportion of fine aggregate. Meanwhile, three different dosages of asphalt: 4.2%, 4.7%, and 5.2% (the percentage of asphalt by mass in asphalt mixture) were set to investigate the influence of asphalt content on parameters. Standard Marshall specimens were made according to the existing asphalt mixture production test code requirements, and the volume index was determined. The constructed parameters were obtained by calculation, and the variation of the parameters with gradation and asphalt content was analyzed. Results show that the volume parameters changed obviously with the gradation of asphalt mixture and the change of asphalt content. The asphalt parameters VA, VM, and db had obvious linear relationship with the amount of asphalt in the mixture, and VM was related to Vf. The void parameters VMA, VK, and VV decreased first and then increased with the increase of Vf. When only changed the asphalt content, parameters VMA, VK, and VV decreased with the increase of the asphalt content. The aggregate parameters G, Vc, Vf, Vf /(1-c), FBV, F1, F2, and Vc/fwere related to the proportion of coarse and fine aggregate and mineral powder in the mixture. |
| Key words: asphalt concrete structural characterization parameter construction gradation performance |
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