时速200km浙赣铁路改造工程级配碎石的选材及试验

高速铁路路基设计中增设了级配碎石过渡层,根据铁路验收标准,对级配碎石施工检测过程中3个重要环节,即级配碎石的选材、配合比确定以及现场检测,提出了几点新的看法,特别是在级配碎石选材中提出要对级配碎石的开口孔隙进行测试,并通过实例解释了其原因。

How to Choose and Test Graded Broken Stone during Construction of High-speed Railway with the Speed of 200 Kilometer Per Hour

A transition layer of the graded broken stone is built in the process of designing high-speed railway.Based on the acceptance standards for railway quality and the author's practical experience, this article brings forward some new suggestions about three important partitions during inspecting the construction of graded broken stone which are how to choose graded broken stone,how to determine graded broken stone mixture and how to inspect local spot.Especially,the author proposes that open void of graded broken stone should be checked carefully and then explains the reason..This check is very important and often ignored in construction.