Question

Consider the following statements:
Lime stabilization of soil leads to
1. Decrease in shrinkage limit.
2. Increase in plastic limit.
3. Decrease in liquid limit.
4. Flocculation of clay particles
Which of the above statements are correct?

• A. 1, 2 and 3
• B. 1,2 and 3
• C. 1, 3 and 4
• D. 2, 3 and 4

Answer 1

The correct option is A 1, 2 and 3

Lime stabilization is used to improve the strength, stiffness and durability of fine-grained soils. Addition of lime to soils produces a maximum density under a higher optimum moisture content than in the untreated soil, thus leads to flocculated or aggregated larger particle groups which are fairly stable. Lime produces a decrease in plasticity index and swelling potential and an increase in shrinkage limit. For this reason, lime stabilization has extensively been used for stabilizing highly unstable plastic and swelling clayey soils, such as blackcotton soils.