OVERVIEW STUDY ON BEHAVIOUR OF EXPANSIVE SOIL WITH LIME

Abstract

This study is review on lime stabilisation (quick and hydrated) lime. A lime is cheapest and traditional
stabilizer for expansive soil. The stabilisation of expansive soil by lime is depend upon cation exchange mechanism,
which leads to the flocculation and agglomeration of expansive soil. Lime-treated soil effectively increases the shear
strength, bearing capacity, durability and workability, improves compressibility of soil and chances of failure is
reduced. A fluctuation behaviour was observed on the influence of lime on soil permeability. However, the factors
affecting the permeability of the soil-lime mixture should be extensively studied. But there has a number of internal
disadvantages, such as carbonation, sulphate attack and environment impact. Magnesium oxide/hydroxide are thus
proposed as a suitable alternative stabilizer to overcome at least some of the disadvantages of using lime in soil
stabilization.