由于交通量的不断增长,道路建设的规模日益增大。很多省(市、区),已将部分重交通道路改为一、二级公路。但在改建和修筑一、二级公路的过程中,发现一些传统材料,如级配碎石、级配砂砾,已不能满足重交通量下强度的需要。为了保证基层强度,很多地方开始修筑水泥稳定土作为道路的基层和底基层。 Due to the continuous increase of traffic volume, the scale of road construction is increasing day by day. In many provinces (cities and districts), some heavy traffic roads have been changed to primary and secondary roads. However, in the process of rebuilding and building Grade I and II highways, some traditional materials such as graded gravel and graded gravel can not meet the needs of heavy traffic. In order to ensure the strength of the grassroots, many places began to build cement stabilized soil as the grassroots and subsoil of roads.