一粘土顆粒含量和塑性指数的关系問題 1939年Н·В·克洛明斯基所著“工程地質学”指出:粘性土依塑性指数分类之,当土属于一定类型时,为了檢查,可参用其顆粒組成性能,因此,通常認为在粘土中小于0.005MM顆粒含量在30％以上,砂質粘土占10～30％,砂質壚坶在10％以下。兩者詳細对应范围如下目前我国各地土工试驗室多半把这种关系用来试验該兩项试验指标的正确性。几年来,我們在实际生产中也注意了这两类数据的相互关系,对西北地区的黄土进行了比較長期的观察和分析,并統計了有代表性的5个工程的463个土的生产成果,在大的范围內,能配合土的 A clay particle content and the relationship between the plasticity of the problem 1939 Н В Klominski “Engineering Geology” pointed out: clay soil by plastic index classification, when the soil is a certain type, in order to check, can be Therefore, it is generally considered that the content of particles smaller than 0.005MM in clay is above 30%, the content of sandy clay is 10 to 30%, and the content of sandy flies is below 10%. The detailed correspondence between the two is as follows. At present, most of the geotechnical laboratories in various parts of China use this relationship to test the correctness of the two experimental indicators. In the past few years, we have also paid attention to the correlation between these two types of data in actual production. We have conducted relatively long-term observations and analyzes of loess in the northwestern region and have counted the production results of the 463 soils of a representative five projects In a large area, with the soil