含泥量对水泥稳定粒料干缩特性的影响

Effects of Mud Content on the Dry-shrinkage Performance ofCement-modified Aggregate

水泥稳定粒料基层的干缩特性是影响其长期使用性能的重要因素之一。通过室内干缩试验,研究水泥稳定粒料中的含泥量对其干缩特性的影响规律。采用回归分析方法,获得干缩应变和平均干缩系数与失水率的关系;同时采用灰色关联分析方法,论证了含泥量对水泥稳定粒料干缩特性(最大干缩应变和最大平均干缩系数)的重要影响。分析结果可为水泥稳定粒料基层设计和施工提供参考数据。

Dry-shrinkage performance of cement-modified aggregate base course is one of important factors which affect its long-term pavement performance.By using indoor dry-shrinkage experiments,this paper studies the effect laws of mud content on the dry-shrinkage performance of cement-modified aggregate.Using the regression analysis method,the relationships between dry-shrinkage strain or average dry-shrinkage index and water-losing ratio can be achieved.At the same time,by using the grey incidence analysis method,the important effect of mud content on the dry-shrinkage performance of cement-modified aggregate,which is the biggest dry-shrinkage strain and average dry-shrinkage index,can also