用广义灰关联法分析级配对沥青砼孔隙率的影响  

Analysis of influence factors of grading on asphalt mixture voids based on general grey relation method

作　　者：赵磊[1] 樊统江[1] 何兆益[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《石油沥青》2008年第5期28-31,共4页Petroleum Asphalt

摘　　要：基于不同级配的沥青混合料车辙试件的孔隙率测定数据与芯样试件的马歇尔实验结果,利用广义灰关联分析方法,考察了各档筛孔间的集料含量和集料吸水率对孔隙率的影响以及孔隙率与稳定度、流值间的综合关联度。研究结果表明:0.075～0.15 mm之间的细集料用量虽然在沥青混合料中所占比例并不高,但对沥青混合料孔隙率的影响程度最显著;其次是集料吸水率;接下来依次是13.2～16 mm之间的粗集料用量和0.3～0.6 mm之间的细集料用量;矿粉的影响也排在较前面;其余各档间的集料含量对孔隙率的影响差别不大;稳定度与孔隙率有很强的关联性,而流值与孔隙率的关联性较小。因此,进行沥青混合料配合比设计时,级配的选用不能仅仅注意各档筛孔的通过率,还要注重各档筛孔间集料的合理含量。Based on data of the voids to be obtained for the wheel tr mixture with different gradations and on the Marshall＇s results to be acking specimens of the asphalt tested for the specimens cored from the same set of the wheel tracking specimens of the asphalt mixture, analysis of the integrative relations of the voids of the asphalt mixture with the percent contents between each two adjacent sieves of different mineral gradations and the percent saturation of mineral aggregate and the Marshall＇s stability （MS） and the Flow value （FL） was carried out using the theoretic of general grey relation. The results show that the percent contents of 0. 075-0. 15 mm fine mineral aggregate although ifs proportion is few is the most principle factor of influencing on the voids of asphalt mixtures. Second is the percent saturation of mineral aggregate. Then other factor is successively the percent contents of 13.2-16 mm coarse aggregate and 0. 3-0. 6 mm fine mineral aggregate. Besides, the MS has a very strong relation to the voids and the FL, however, has a fewer. Therefore when the mix design of asphalt mixture is done, electing grading not only must pay attention to pass percentage of each sieve size but also rational contents of aggregate between each two adjacent sieves size.

关 键 词：沥青混合料 孔隙率 通过率 广义灰关联分析 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]