塑性是表征细粒土物理性能一个重要特征，一般用塑性指数来表示；液限与塑限的差值称为塑性指数IP(Plasticity Index)=ωL(液限 Liquid Limit) -ωP(塑限 Plastic Limit)。
But when IP <10,with the decrease of plasticity index,the liquid limit and the plastic limit increase abnormally.
但是当IP<10以后,这种线性关系消失了。 随着塑性指数的减小,塑限不仅没有减小,反而逐渐增大,液限的变化也有类似的情况,出现了塑限反常现象。
参考来源 - 低液限粉土液塑限反常现象原因分析·2,447,543篇论文数据，部分数据来源于NoteExpress
指出了地基承载力与塑性指数的关系，探讨了黄土地基工程分类。
The relationship between foundation bearing capacity and plasticity indexes is pointed out, and discusses loess foundations engineering classification.
原则将混凝土装入模具中，并用夯实机夯实。固结量即称为“压塑性指数”。
PRINCIPLE Concrete is placed into a mould and compacted by a rammer. The amount of consolidation is expressed as a compactibility index.
在铁道部新的土分类标准中，细粒土由按单纯的塑性指数分类改为按塑性图分类。
In the new classification standard of soil adopted by the Railway Ministry, fine particle soils are classified by plastic index diagram instead of plastic index simply.
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