测定土塑限的试验方法研究

Study of the Experiment Method for Determining the Plastic Limit

塑限是细粒土的一个重要特征,它反映了土粒和水相互作用时的性态。土的塑限指标的测定长期采用滚搓法。该法最大的缺点是要求试验者作出很大的判断。本文为圆锥设计了一个环型样杯来测土的塑限。环型样杯直径20毫米,高 20 毫米,用于 3￣10毫米的圆锥入土深度的试验中。

The plastic limit is an important property of fine-grained soils,it reflects the interaction between soil and water.The standard thread-rolling method has been used to determine the plastic limit of soils.The maximum default of the method is requiring considerable judgements from the operator.This paper presents the design of a small specimen ring for fall-cone tests for determining.A small specimen ring of 20 mm in diameter and 20mm in depth is designed and used for cone penetrations between 10 and 3mm.