摘要
通过大量的室内试验,对车辙试验中的动稳定度DS、相对变形(δ_(车辙))及APA试验中的相对变形(δ_(APA))等不同沥青混合料高温稳定性能的评价指标进行了对比分析。研究发现:δ_(APA)与δ_(车辙)相比,高温中绝对变形相比:对粗型级配混合料而言,两个指标的平行性较差,对细型级配而言,平行性较理想,此时两者可换算。δ_(车辙)与DS相比:用相对变形或动稳定度来评价混合料的高温稳定性都是可以的,但就两者与空隙率相关性角度来说,动稳定度评价指标要比车辙深度要更好些。
Through lots of indoor tests,This paper compared the different asphalt mixture high temperature stability evaluating index,such as dynamic stability(DS) and relative deformation(δ_(车辙))in rutting test and relative deformationin APA test(δ_(APA)).The research got the following conclusions: 1.The correlation betweenδ_(APA) asδ_(车辙) is better in fine gradation asphalt mixture than in coarse's.2.Bothδ_(车辙) and DS index are practical to evaluate the mixture's high temperature stability,but DS is better thanδ_(车辙) in the relationship with the VV of asphalt mixture.
出处
《上海公路》
2009年第2期42-44,55,共4页
Shanghai Highways
基金
国家西部交通建设科技资助项目(200531800001)
