Hydrated lime Ca(OH)₂ can be effectively used for stabilization of

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Question

This question was previously asked in

MPPSC AE CE 2017 Official Paper - II

Answer 1

Concept:

Lime stabilization of Soil:

It is the process of stabilizing soils by adding lime to reactive soils to generate long-term strength gain through a pozzolanic reaction.
It is used to improve the strength, stiffness, and durability of fine-grained clayey soils.
The addition of lime to soils produces a maximum density under a higher optimum moisture content than in the untreated soil, thus leading to flocculated or aggregated larger particle groups which are fairly stable.
An increase in lime content causes a considerable reduction in swelling pressure and thus an increase in shrinkage limit and plastic limit. Subsequently, it decreases the liquid limit.
Adding lime to soils increases soil resilient modulus shear strength substantially.