摘要
通过在湖南省垄茶高速公路应用多孔水泥稳定碎石排水基层,对其进行试验与应用研究,提出了多孔水泥稳定碎石的强度、厚度、渗透系数以及有效孔隙率等技术指标的确定方法,并且推荐了级配设计范围。结合试验条件,优化试件成型方法,采用修正的静压成型方法,最大限度减少集料压碎,试验方便且误差较小。施工时,采用透层+同步碎石封层的方式保证下承层的封水,在有效排水的同时确保路面使用性能。实践表明,现有基层生产与施工设备完全满足排水基层的应用。
We suggest the determining method of technical indexes including strength,thickness,permeability coefficient,effective porosity,and recommend the gradation range design of aggregate,through the research and application of porous permeable base in Long-cha express way. Combining with test condition,we optimize specimen molding method by using the revised static pressure method,which maximally reduces the crushing of aggregate,conveniently test and has a lesser error. We use the method of prime coatsynchronous surface dressing to assure the sealing water of sub-layer,and ensure pavement performance with effective drainage at the same time. Practice shows that the existing primary production and construction equipment completely satisfy the application of drainage base.
出处
《公路工程》
北大核心
2015年第4期135-140,共6页
Highway Engineering
基金
湖南省交通厅2011年度科技进步与创新项目(201117)
