Correct option is B
LIME STABILISATION:- Lime stabilisation is done by adding lime to a soil. It is useful for stabilisation of clayey soils. When lime reacts with soil, there is exchange of cations in the adsorbed water layer and a decrease in plasticity of the soil occurs. The resulting material is more friable than the original clay, and is, therefore, more suitable as subgrade. There are basically 5 types of limes. (I) High calcium, quick lime ( CaO ) (ii) Hydrated, high calcium lime (iii) Dolomitic lime (iv) Normal, hydrated dolomitic lime (v) Pressure, hydrated dolomitic lime ] The quick lime is more effective as stabiliser than the hydrated lime; but the latter is more safe and convenient to handle. Generally, the hydrated lime is used. It is also known as slaked lime.
