[1]张 毅,蒋应军,杨秋侠.沥青混合料矿料强嵌挤结构研究[J].西安建筑科技大学学报:自然科学版,2013,45(02):185-191.[doi:10.15986/j.1006-7930.2013.02.006]
　ZHANG Yi,JIANG Ying-jun,YANG Qiu-xia.Strong aggregate interlocking structure in asphalt mixture[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(02):185-191.[doi:10.15986/j.1006-7930.2013.02.006]
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沥青混合料矿料强嵌挤结构研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
45
期数:
2013年02期
页码:
185-191
栏目:
出版日期:
2013-04-30

文章信息/Info

Title:
Strong aggregate interlocking structure in asphalt mixture
文章编号:
1006-7930(2013)02-0185-07
作者:
张 毅1; 2; 蒋应军1; 杨秋侠3
(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.陕西省交通厅基本建设工程质量监督站,陕西 西安 710075;3.西安建筑科技大学土木工程学院,陕西 西安 710055)
Author(s):
ZHANG Yi1; 2;  JIANG Ying-jun1;  YANG Qiu-xia3
(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education, Changan University, Xian 710064, China; 2.Quality Supervision Station of Shaanxi Provincial Communications Department, Xian 710075, China; 3.Civil Engineering College of Xian University of Architecture and Technology, Xian 710075, China)
关键词:
道路工程; 沥青混合料; 强嵌挤骨架密实级配; 颗粒流; 加州承载比; 路用性能
Keywords:
road engineering;  asphalt mixture;  strong aggregate interlocking structure;  particle flow code;  California bearing ratio;  road performance
分类号:
U414
DOI:
10.15986/j.1006-7930.2013.02.006
文献标志码:
A
摘要:
为了优化矿料级配、提高沥青混合料性能,应用PFC2D构建了加州承载比(CBR)的数值试验方法,并验证了其可靠性;基于数值试验分析了合成粗集料CBR变化规律和基于性能最优提出了AC-16型沥青混合料强嵌挤骨架密实级配,并对其力学性能进行室内试验验证.结果表明:13.2~19mm集料构成了具有强嵌挤力的主骨架结构,9.5~13.2mm集料和4.75~9.5mm集料具有填充主骨架空隙或干涉主骨架结构的作用,基于CBR最大原则的13.2~19mm集料、9.5~13.2mm集料和4.75~9.5mm集料3种规格粗集料的最佳质量比为45∶35∶20,基于性能最优的粗细集料比例为55∶45~65∶35;与规范级配相比,提出的强嵌挤骨架密实级配沥青混合料抗压强度、劈裂强度和动稳定度分别提高了26%~28%、20%~30%和22%~27%.成果可供工程实践参考
Abstract:
In order to optimize the aggregate gradation and improve the performance of asphalt mixture, a numerical test method based on the particle flow modeling was developed for the California Bearing Ratio(CBR)test and was proved to be reliable. The CBR laws of aggregate were analyzed based on the numerical simulation, and the Strong Aggregate Interlocking Structure(SAIS)was developed according to optimal performance of AC-16asphalt mixture. The road performance of SAIS asphalt mix were studied and the results indicate that 13.2~19mm aggregates are the main skeleton with SAIS, while the proper amount 9.5~13.2mm aggregates and 4.75~9.5mm aggregates provide a properly packed aggregate skeleton structure; the optimal ratio of the three types of aggregates(13.2~19mm,9.5~13.2mm,4.75~9.5mm)is 45∶35∶20by mass Upon the maximum CBR principle, and the ratio of coarse aggregate and fine aggregate is 55∶45~65∶35based optimal performance of asphalt mixture. Compared with aggregate gradation in specifications, SAIS asphalt composite is superior in terms of compressive strength, splitting strength and dynamic stability, which are enhanced by 26%~28%、20%~30% and 22%~27% respectively. The achievement of this study can be used as reference in practice

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备注/Memo

备注/Memo:
收稿日期:2012-07-26 修改稿日期:2013-03-21
基金项目:交通运输行业联合科技攻关资助项目(2010-353-361-300);长安大学基础研究支持计划专项基金资助(CHD2011ZY007);西安建筑科技大学陕西省教育厅资助项目(11JK0892)
作者简介:张 毅(1969-),男,陕西高陵人,正高工,博士研究生,主要从事道路工程质量监督与科研工作.
更新日期/Last Update: 2015-10-05