Influence of Blast Furnace Slag on the Consistency Limits of the Black Cotton Soil

Constructions on the expansive soils are being reported with problems worldwide by practising engineers. In India, black cotton soil is the main expansive type of soil, due to its extensive presence throughout the stretch of the country. The soil produces damaging effects over the structure constructed over it due to the voluminous variations with the moisture content. The problematic properties of the Black cotton soil are to be dealt within order to decrease the detrimental effect on the civil engineering structure for prolonged life. Many experiments are done to improve the engineering properties of the soil. This paper presents the variation in the index properties of the black cotton soil due the addition of Blast furnace slag. The Blast furnace slag is an industrial waste product obtained during steel manufacturing. It has been observed that the plasticity characteristics of BC soil improves cosiderably on addition of BFS.