摘要
为了优化沥青混合料(HMA)集料级配,提高路面抗车辙性能,延长路面使用寿命,应用粗集料单因素骨架密实性检验和贝雷法相结合的研究方法,研究了集料质量分数、粗集料比例(CA)值、关键筛孔通过率对级配骨架的影响。结果表明:兰州辉长岩AC-16粗集料骨架结构的最优配比为5.4(19-16 mm)∶30.6(16.0-13.2 mm)∶24(13.2-9.5 mm)∶40(9.50-4.75 mm),优化的骨架集料级配的CA值为0.67。对该级配和常规密级配沥青混合料的高温性能、低温性能、水稳定性等路用性能进行了对比研究,证实了优化级配具有更优良的路用性能。
In order to optimize the Hot Mix Asphalt＇s （HMA） aggregate gradation, improve the pavement anti-rutting performance, and prolong the pavement life, through single-factorskeleton-dense-test and Bailey method, the optimal framework structure of gabbro AC-16 gradation was got by analyzing the effect of the aggregate content, CA ratio, passing percent of the key sieve to the gradation＇s skeleton. The optimal framework gradation is 5.4（19-16 mm） ： 30.6（16.0-13.2 mm） = 24（13. 2-9.5 mm） ： 40（9.50-4.75 mm）, the CA ratio is 0. 67. The pavement performances （high temperature performance, low temperature performance and water stability） of the optimal gradation and the specification＇s gradation were studied. The results show that the optimal gradation can improve the pavement performances greatly. 8 tabs, 4 figs, 10 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第3期15-19,共5页
Journal of Chang’an University(Natural Science Edition)
基金
交通部联合攻关项目(200235336228)
