摘要
用灰熵关联理论方法研究了沥青路面抗疲劳层的疲劳试验结果。结果表明:影响抗疲劳层疲劳性能因素的顺序为:最大公称粒径>空隙率>油石比>0.075mm筛孔通过率>软化点>4.75mm筛孔通过率>针入度(25℃)>VMA(矿料间隙率)。为提高抗疲劳层的疲劳性能,建议沥青混合料的最大公称粒径不宜过大,同时应增加沥青混合料油石比,减小沥青混合料空隙率;另外,0.075mm应作为沥青混合料的关键筛孔孔径。
The results of fatigue experiment of asphalt road fatigue-resistant layer are analyzed by means of grey correlation entropy method. The results show that the importance of the factors in deciding the fatigue performance of fatigue-resistant layer has following sequence： nominal maximum aggregate size〉volume of air voids〉asphalt ratio （by mass） to aggregate〉percent passing 0.075 mm sieve〉softening point〉percent passing 4.75 ram sieve〉penetration （25℃）〉VMA. In order to improve the fatigue performance of fatigue-resistant layer, it is suggested that the nominal maximum aggregate size of asphalt mixture should not be too big; it is better to increase the asphalt ratio to aggregate, decrease the volume of air voids; 0.075 mm should be taken as the key sieve pore.
出处
《重庆建筑》
2010年第1期39-42,共4页
Chongqing Architecture
关键词
抗疲劳层
沥青混合料
疲劳性能
灰熵法
fatigue-resistant layer
asphalt mixture
fatigue performance
grey correlation entropy method
