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摘要: 为了准确模拟沥青混合料抗车辙性能, 采用分形理论分析了沥青混合料微观结构, 研究了粗细集料不同级配分形维数对沥青混合料抗车辙性能的影响, 并根据级配分形维数公式计算了沥青混合料的分形值, 进行了沥青混合料车辙试验和微观结构的电子扫描。分析结果表明: 4.75 mm通过率是集料尺度的分界点, 集料分形维数与抗车辙性能有一致相关性, 分形值越大, 抗车辙能力越高; 根据路用性能设计集料级配可以定量地分析沥青混合料的级配差异和路面性能, 及路面微观结构与宏观路用性能的关系。Abstract: In order to accurately simulate rut resistance capability of asphalt mixture, its microstructure was analyzed by using fractal theory, the influences of different fractal dimensions for coarse and fine aggregates on the capability were studied, the fractal values were calculated according to gradation fractal dimension formulas, and the rutting test of asphalt mixture and the electronic scanning of the microstructure were carried out.Analysis result shows that 4.75 mm passing rate is the dividing point of aggregate scales, aggregate fractal dimension has consistent pertinence with the capability, the bigger fractal dimension value is, the finer the capability is; gradation difference, pavement performance and the relationship between pavement microstructure and macroscopical performance can be quantitatively analyzed by using aggregate gradation design method.
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[1] 李维涛, 孙洪泉, 邢君. 混凝土中的分形效应初探[J]. 水利与建筑工程学报, 2004, 2(1): 17-19. doi: 10.3969/j.issn.1672-1144.2004.01.005Li Wei-tao, Sun Hong-quan, Xing Jun. Theory of fractal ap-plied to concrete study[J]. Journal of Water Resources andArchitectural Engineering, 2004, 2(1): 17-19. (in Chinese) doi: 10.3969/j.issn.1672-1144.2004.01.005 [2] 李立寒, 曹林涛, 郭亚兵, 等. 初始空隙率对沥青混合料性能影响的试验研究[J]. 同济大学学报: 自然科学版, 2006, 34(6): 757-760. doi: 10.3321/j.issn:0253-374X.2006.06.010Li Li-han, Cao Lin-tao, Guo Ya-bing, et al. Influence of ini-tial air void on performance of asphalt mixtures[J]. Journal ofTongji University: Natural Science, 2006, 34(6): 757-760. (in Chinese) doi: 10.3321/j.issn:0253-374X.2006.06.010 [3] 陈忠达, 袁万杰, 高春海. 多级嵌挤密实级配设计方法研究[J]. 中国公路学报, 2006, 19(1): 32-37. doi: 10.3321/j.issn:1001-7372.2006.01.007Chen Zhong-da, Yuan Wan-jie, Gao Chun-hai. Research ondesign method of multilevel dense built-in gradation[J]. Chi-na Journal of Highway and Transport, 2006, 19(1): 32-37. (in Chinese) doi: 10.3321/j.issn:1001-7372.2006.01.007 [4] 陈忠达, 袁万杰, 薛航, 等. 沥青混合料高温性能评价指标[J]. 长安大学学报: 自然科学版, 2006, 26(5): 1-4. doi: 10.3321/j.issn:1671-8879.2006.05.001Chen Zhong-da, Yuan Wan-jie, Xue Hang, et al. High tem-perature stability index of hot mixed asphalt[J]. Journal ofChang an University: Natural Science Edition, 2006, 26(5): 1-4. (in Chinese) doi: 10.3321/j.issn:1671-8879.2006.05.001 [5] 黄宝涛, 廖公云, 张静芳. 半刚性基层沥青路面层间接触临界状态值的计算方法[J]. 东南大学学报: 自然科学版, 2007, 37(4): 666-670. doi: 10.3321/j.issn:1001-0505.2007.04.024Huang Bao-tao, Liao Gong-yun, Zhang Jing-fang. Analyticalmethod of interlayer contact fettle in semi-rigid-base bitumi-nous pavement[J]. Journal of Southeast University: NaturalScience Edition, 2007, 37(4): 666-670. (in Chinese) doi: 10.3321/j.issn:1001-0505.2007.04.024 [6] Warren T L, Krajcinovic D. Random cantor set models forthe elastic-perfectly plastic contact of rough-surfaces[J]. Wear, 1996, 196(1/2): 1-15. [7] James P H, Luis E V. Fractal analysis of the roughness andsize distribution of granular materials[J]. Engineering Geolo-gy, 1997, 48(3/4): 231-244. [8] 李家春, 崔世富, 田伟平. 公路边坡降雨侵蚀特征及土的崩解试验[J]. 长安大学学报: 自然科学版, 2007, 27(1): 23-26. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200701005.htmLi Jia-chun, Cui Shi-fu, Tian Wei-ping. Erosion characteris-tic of road slope and test of soil disintegration[J]. Journal ofChang an University: Natural Science Edition, 2007, 27(1): 23-26. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200701005.htm [9] 吕文江, 陈爱文, 郝培文, 等. 贝雷法参数CA比对沥青混合料性能的影响[J]. 长安大学学报: 自然科学版, 2005, 25(4): 5-8. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200504002.htmLu Wen-jiang, Chen Ai-wen, Hao Pei-wen, et al. Effect ofCA ratio on asphalt mixture property based on Baileymethod[J]. Journal of Chang an University: Natural ScienceEdition, 2005, 25(4): 5-8. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200504002.htm [10] 唐明. 混凝土空隙分形特征的研究[J]. 混凝土, 2000, 12(8): 3-5.Tang Ming. Research on the fractal characteristics of theconcrete proe[J]. Concrete, 2000, 12(8): 3-5. (in Chinese) [11] 徐皓, 倪富健, 陈荣生, 等. 排水性沥青混合料耐久性[J]. 交通运输工程学报, 2005, 5(2): 27-31. http://transport.chd.edu.cn/article/id/200502007Xu Hao, Ni Fu-jian, Chen Rong-sheng, et al. Durability ofporous asphalt mixture[J]. Journal of Traffic and Transpor-tation Engineering, 2005, 5(2): 27-31. (in Chinese) http://transport.chd.edu.cn/article/id/200502007 -
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