膨胀土地基的处理方法

Methods of Improvement for Expansive Soil Basement

研究了膨胀土地基的处理方法，把膨胀土地基处理方法分为膨胀土性质改良法、保湿法及换土法三类．其中膨胀土性质改良法是改变膨胀土的亲水性、热敏性和胀缩性的方法，包括机械改良法（又称夯实法）、物理改良法及化学改良法．保湿法是保持膨胀土地基土中水分不改变，克服膨胀土吸水膨胀、失水收缩性质的方法．同时分析比较了几种方法的优缺点。

Improvement methods of expansive soil basement are studied and the methods are divided into three categories:(a)expansive soil property changing method,(b)moisture protection method,and (c)soil relieving method.The method to change the properties of expansive soil is changed,and it includes three kinds (a)ramming method,(b)physical change method and (c)chemical change method.The moisture method protection is to prevent water from moving, so as to reduce swelling shrinkage with water.The merits and demerits of these methods are analyed,and the suitabe condition and improvement mechanism are studied.