摘要
通过对车辙形成机理、沥青混合料高温稳定性评价指标以及混合料的压实机理的分析,指出混合料的永久变形主要由压密变形和剪切流动变形组成以及旧评价指标的缺陷,并把混合料的压实过程分为三个阶段,最终提出"综合稳定系数CSI"作为沥青混合料高温稳定性的评价指标。
The paper pointed out that mixture permanent deformation is mainly made up by the compaction deformation and shear flow deformation, the defect of old evaluation through analysis rut formation mechanism, high temperature stability of asphalt mixture evaluation and the compaction mechanism of mixture, and divided mix compaction process into three stages, finally proposed ＂complex stability index CSI＂ evaluation indicators to evaluate asphalt high temperature stability.
关键词
车辙形成机理
永久变形
高温稳定性
综合稳定系数
rut formation mechanism
permanent deforma- tion
high temperature stability
complex stability index
