Abstract
Expansive soils generally occur in arid and semi-arid regions of the world. It causes serious problems to the civil engineering structureslike, buildings and other structures, roads, pipelines, bridges, etc. Such soils swell, when given an access to water and shrink when they dry out. Several attempts were made by researchers to control the swell-shrink behaviour of these soils. The Swelling potential of the expansive soil mainly depends on the soilproperty, environmental factors and stress conditions. In this work, a detailed study on shrink-swell behaviour of expansive soil, and ways to control it by stabilizing with different proportions of the admixtures was made. In this paper, admixtures such as M-sand, fly-ash, river sand, beach sand and copper slag were used. They were used in different proportions of 2%, 5%, 10%, 12% and 15%. From the free swell index, it can be concluded that 10% copper slag effectively reduces swellcompared to the other admixtures.
Published Version
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