The paper discussed control point of material quality, mixture ratio design and spreading quality about hot asphalt mixture through supervision practice of asphalt pavement construction in Expressway.
Through analysis of the traffic accidents data of one expressway, especially accident frequency, severity and causes, the safety management system is also an important factor of accident.
在高速公路交通事故及其严重程度的致因中安全管理系统的健全不容忽视。
3
Through the analysis of the expressway living area sewage quality and the comparison of different sewage treatment methods, the paper provides the user a suitable way to treat such sewage.