沥青混合料结构参数与蠕变特性关系分析
Analysis of Structural Parameters and Creep Characteristics of Asphalt Mixture
DOI: 10.12677/OJTT.2018.72009, PDF,   
作者: 刘海权, 纪 伦, 李 俊：哈尔滨工业大学交通科学与工程学院，黑龙江 哈尔滨；张 磊：中国路桥工程有限责任公司，北京；贺文栋：哈尔滨工业大学交通科学与工程学院，黑龙江 哈尔滨；山西省交通科学研究院，山西 太原
关键词: 沥青混合料结构参数；蠕变；流变时间；抗永久变形；Structural Parameters of Asphalt Mixture； Creep； Rheological Time； Permanent Deformation Resistance
摘要: 沥青混合料的结构影响其蠕变特性。为了研究沥青混合料结构参数与蠕变特性的关系，采用5种不同AC类及5种不同SMA类级配的沥青混合料进行蠕变试验和流变时间分析，并基于burgers模型进行分析，量化空间结构参数，探讨蠕变特性和结构参数的关系。试验结果表明，粗颗粒的增加都显著提高了AC16和SMA16沥青混合料的流变时间，增强了沥青混合料抗永久变形能力；AC16结构参数中，空隙率和Q与η1相关性显著。SMA16结构参数中，粗颗粒面积、空隙率、参数Q以及趋向参数Δ与η1和η2显著相关；4.75通过率的增加使AC16和SMA16的流变时间变化趋势相反。
Abstract: The structure of asphalt mixture influences its creep characteristics. In order to study the rela-tionship between the structure parameters and creep characteristics of asphalt mixtures, the creep tests of different gradation (5 kinds of AC and 5 kinds of SMA) asphalt mixtures were carried out, and the relationship between creep properties and structural parameters was discussed based on the Burgers creep model. The results show that the increase of coarse particles significantly improves the rheological time of AC16 and SMA16, and enhances the resistance to permanent deformation of asphalt mixtures. The correlation between void fraction Q and η1 is significant in AC16 structural parameters. In SMA16 structural parameters, coarse-grained area, void fraction, parameter Q and trend parameter Δ are significantly correlated with η1 and η2. The increase of 4.75 passing rate reversed the change of the rheological time of AC16 and SMA16.
文章引用：刘海权, 纪伦, 张磊, 李俊, 贺文栋. 沥青混合料结构参数与蠕变特性关系分析[J]. 交通技术, 2018, 7(2): 69-78. https://doi.org/10.12677/OJTT.2018.72009

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