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影响土体冻胀的主要因素有土质、水分、温度。物理化学方法防治土体冻胀,即从以上三个因素着眼,使用人工材料来处理土,抑制适合土体冻胀产生和发展的条件,从而达到减弱或消除冻胀的目的。 苏联、美国、加拿大、中国是世界上主要的冻土国家。随着这些国家冻土地区工程建筑规模的扩大,所遇冻害问题也日益俱增。因此,用物理化学方法防治土体冻胀的研究及其应用工作也越来越受到重视。本文所述内容主要是这些国家的研究成果。
The main factors affecting soil frost heave are soil, water and temperature. Physical and chemical methods to prevent soil frost heaving, that is, from the above three factors, the use of artificial materials to treat soil, inhibit soil frost heaving production and development conditions, so as to achieve the purpose of reducing or eliminating frost heave. The Soviet Union, the United States, Canada, China are the major permafrost countries in the world. With the expansion of the construction scale of the frozen soil in these countries, frost damage problems are also increasing day by day. Therefore, the use of physical and chemical methods to prevent soil frost heave research and application of more and more attention. This article describes the main research results of these countries.