我国几年来对膨胀土的研究取得了很大的成绩,但对有些问题,如对土的胀缩变形的认识、土的膨胀性与物理-化学性的关系等,看法不尽相同。本文结合几年来工程中的实验成果,拟就以下三个问题提出一点粗浅看法。一、影响胀缩变形的主要因素膨胀土是一种包含多种次生矿物的高塑 In recent years, China has made great achievements in the study of expansive soil, but it has different opinions on some issues, such as the understanding of the expansion and contraction of soil, the relationship between the expansion of soil and the physico-chemical properties. This article combines the experimental results in the past few years and proposes to provide a few superficial views on the following three issues. First, the main factors affect the expansion and contraction deformation of expansive soil is a variety of secondary minerals containing high plastic