摘要
针对干燥收缩和温度收缩引起的半刚性基层路面病害,选取水泥稳定碎石混合料作为半刚性基层材料进行试验研究。在调整水泥掺量与不同级配组合的情况下,通过温度收缩试验和干燥收缩试验考察不同水泥掺量和不同结构对水泥稳定碎石混合料缩裂性能的影响。结果表明:选取水泥掺量低于4.5%,同时采用骨架型结构的混合料时,水泥稳定碎石混合料能有效地改善基层的抗缩裂性能。
Aimed at the diseases of semi-rigid pavement caused by drying and temperature-induced shrinkage,cement stabilized macadam was chosen to be semi-rigid base material for experimental study.The impact of cement content and the gradation on the shrinkage and crack resistance properties of cement stabilized macadam was studied with temperature shrinkage test and drying shrinkage test.The results show that when the cement content is lower than 4.5% and skeleton structure is applied to the concrete mixture,the shrinkage and crack resistance properties shall be noticeably improved.
出处
《筑路机械与施工机械化》
北大核心
2016年第5期67-70,75,共5页
Road Machinery & Construction Mechanization
基金
国家自然科学基金项目(51408046)
关键词
水泥稳定碎石
干燥收缩
温度收缩
最佳掺量
cement stabilized macadam
drying shrinkage
temperature shrinkage
optimal content
