水泥稳定砂砾基层结构类型的研究

摘要

In order to determining dense framework structure mixture gradation of cement stabilized gravel, natural gravel is tested in this paper by the method of step filling test and theoretical calculation I method. The dense framework structure gradation range been proposed base on compaction principle and the structure type of cement stabilized gravel base been classified by passing rate of 4. 75 mm. Compaction test results show that the compactness of mixture which is made according to the dense framework structure gradation range of cement stabilized gravel is higher than any others. This indicates the rationality of classifying the structure type of cement stabilized gravel base by using above method.%以天然砂砾为试验对象,采用逐级填充试验与理论计算I法相结合的方法确定骨架密实型水泥稳定砂砾混合料级配.根据压实度原理提出级配范围,以筛孔尺寸4.75mm通过率划分了水泥稳定砂砾基层各结构类型.实试验结果表明,按水泥稳定砂砾骨架密实型级配范围配得的混合料的密实度大于其它类型混合料的密实度.说明了采用上述方法划分水泥稳定砂砾混合料组成结构类型的合理性.