无碴轨道沥青混合料防水封闭层渗透性评测

Evaluation on permeability of closed waterproof layer of asphalt mixture in ballastless track

介绍了无碴轨道的优点和基本构成,针对无碴轨道铁路对路基工后沉降的要求和影响工后沉降的因素,分别阐述了现场测定,实验室制模测定,简化试验三种检测渗透系数的方法,并进行比较,得出了渗透系数的影响因素及标准。

The paper introduces merits and basic structure of ballastless track,and aiming at requirements of ballastless track to subgrade settlement and factors affecting the settlement,it states and compares three methods of inspecting the permeability coefficient including inspection in place,determination of laboratory modeling as well as simplified experiment,thus concludes impacting factors and standard of permeability coefficient.