粗粒土最大干密度的室内试验与理论计算

The Compaction Characteristics of Cohesionless Coarse-Grained Soil

压实度是控制路基压实质量的指标,因此现场实测干密度与最大干密度的准确测定十分重要。由于粗粒土粒径较大,仪器对粒径范围的限制使得最大干密度很难准确测定。此文对粗粒土最大干密度的试验法和计算法进行了分析,总结并验证了现有计算最大干密度的三种近似方法。

The degree of compaction is one of the important index on weighing the quality of the subgrade, which is determined by the maximum dry density and the actual dry density. However, the range of the particle size is limited, it is difficult to evaluate the maximum dry density. It is also hard to detect the compaction constitution in place, hree approximate methods to caculate the maximum dry density are generalized and verified. The Rayleigh wave is a good way to evaluate the degree o fcompaction.