The plasticityindexof silt is in general less than 10, but whether Atterberg limits can be used as indices for such soils is doubtful.
粉土的塑性指数一般小于10，但阿太堡界限是否适用于作为评价粉土的指标是值得怀疑的。
2
All kinds of factors influencing the compressibility of polluted soil were analyzed, including grain-size distribution, plasticityindex, moisture content and void ratio.
The results showed that degree of compaction reduces as plasticityindex and clay content increase, which also prove the relationship between plasticity index and clay content;