摘要
采用千分表支架法对乳化沥青水泥稳定碎石材料的干缩性能进行了试验研究,分析了不同水泥和乳化沥青掺量下混合料失水率、干缩应变和干缩系数等参数的变化规律。试验结果表明:乳化沥青的掺入可有效降低混合料的失水率,显著减小水泥稳定碎石的干缩应变和干缩系数;混合料的干缩系数在施工初期变化较大,建议在乳化沥青水泥稳定碎石基层施工后两周内进行湿法养生。
Based on the test methods with dial gage and bracket,laboratory experiments were done to study the dry shrinkage performance of emulsified asphalt cement stabilized macadam, the water loss rate, dry shrinkage strain and coefficient of mixtures with different cement contents and emulsified asphalt contents were analyzed. The test results show that the incorporation of emulsified asphalt could make water loss rate, dry shrinkage strain and coefficient of cement stabilized macadam decrease significantly. The dry shrinkage coefficient of mixtures has great variation at early stage, so it is suggested that mixtures should have enough water contents in the peri- od of two weeks after the construction of emulsified asphalt cement stabilized macadam base.
出处
《华东交通大学学报》
2017年第1期92-98,共7页
Journal of East China Jiaotong University
基金
山西省交通运输厅科技计划项目(2016-1-1)
关键词
路面工程
水泥稳定碎石
乳化沥青
收缩性能
pavement engineering
cement stabilized macadam
emulsified asphalt
shrinkage performance
