一、前言水泥混凝土路面具有强度高、耐久性好、使用寿命长、年平均维修费用少、能适应包括履带、硬轮等在内的任何车辆通行的优点,所以特别受使用单位的欢迎。如北京、上海、武汉、南京等城市的水泥混凝土路面,在高级路面中占有一定比例。但由于缺乏水泥和造价高等原因,在过去十几年中修建量相应减少。近几年,由于交通量日益增加,车辆吨位加重,水泥供应的好转,加 First, the preface Cement concrete pavement with high strength, durability, long life, the average annual maintenance costs less, including tracks, hard wheels, etc., including the advantages of any vehicle traffic, so in particular by the use of the unit’s welcome. Such as Beijing, Shanghai, Wuhan, Nanjing and other cities of the cement concrete pavement, occupy a certain proportion of the senior pavement. However, due to the lack of cement and high cost, the amount of construction has been reduced over the past decade or so. In recent years, due to the increasing traffic volume and heavier vehicle tonnages, the cement supply has been improved. Plus