TREATMENT OF COLLAPSIBILITY OF GYPSEOUS SOIL

Abstract

A series of double odometer tests are conducted to study the compressibility and collapse of gypseous soil taken from west of Baghdad governorate. The gypsum content of the soil used is nearly 25%. Four different types of additives are selected to reduce the collapse strain of this soil. These additives are cement, bentonite, calicium chloride and silicagel. An adequate reducing in the compressibility and collapsibility was obtained especially when the cement is used.