[1]徐科,张肖宁,李智,等. 沥青混合料级配离析定量评价与相关性研究[J].深圳大学学报理工版,2006,23(4):296-302.
　XU Ke,ZHANG Xiao-ning,LI Zhi,et al.Study on quantificational evaluation and correlation of gradational segregation in asphalt mixture[J].Journal of Shenzhen University Science and Engineering,2006,23(4):296-302.
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 沥青混合料级配离析定量评价与相关性研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第23卷
期数:
2006年4期
页码:
296-302
栏目:
土木建筑工程
出版日期:
2006-10-30

文章信息/Info

Title:
Study on quantificational evaluation and correlation of gradational segregation in asphalt mixture
文章编号:
1000-2618（2006）04-0296-07
作者:
徐科1; 张肖宁2; 李智2; 王端宜2
1）广东省长大公路工程有限公司，广州510075
2）华南理工大学道路工程研究所，广州510641
Author(s):
XU Ke1 ;  ZHANG Xiao-ning2 ;  LI Zhi2 ;  and WANG Duan-yi2
1) Guangdong Changda Road Engineering Ltd,Guangzhou 510075 P. R. China
2) Road Research Institute South China University of Technology,Guangzhou 510641P. R. China
关键词:
沥青混合料; 级配离析; 粗集料结构系数; 灰色关联分析
Keywords:
Asphalt mixture;  gradational segregation;  coarse aggregate structure factor;  grey correlation analysis
分类号:
U 41；TN 991.73
文献标志码:
A
摘要:
根据21种常规级配，制备Superpave旋转压实试件用以评价沥青混合料的级配离析.利用数字图像处理技术，获得试件截面图像，并根据FeretDiameter提取图像中各档粗集料的颗粒信息.改进了结构各向异性的体视学评价方法，提出使用粗集料结构系数Jf作为评价沥青混合料试件级配离析的指标参数.对各级配的Jf值和各档粗集料分计筛余百分率关系进行了线性回归，其复相关系数R达到了0.9621.对于颗粒最大标称粒径相同的级配，使用灰色关联分析，得出结论:除颗粒最大标称粒径为9.5mm级配外，Jf受级配中第3大筛余百分率影响最大.
Abstract:
To evaluate the gradational segregation in asphalt mixture, SGC specimens were compacted according to twenty-one usual gradations. The sectional image s of specimens were acquired using digital image processing technique. FereDiameter was used to distinguish the coarse aggregates. The stereological determination technology which was used to evaluate the structure anisotropy was improved in the present work. The coarse aggregate structure factor J f was used to evaluate the anisotropy of asphalt mixture. Linear regression was made be tween J f and subtotal triage of coarse aggregates, and its correlations coefficient reached 0.962 1. To the gradations with the same maximum nominal g rain size, grey correlation was used to analyze the results. The conclusion showed that, except the 9. 5 mm maximum nominal -grain-size gradation, Jf was influenced mostly by the subtotal triage of coarse aggregates in the third large sieve pore.

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更新日期/Last Update: 2015-06-26