Question

Consider the following statements:
On addition of lime to swelling soils,
1. their liquid limit increases
2. their plastic limit increases
3. their shrinkage limit increases
4. their swelling potential decreases
Which of these statements are correct?

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

Answer 1

The correct option is C 2, 3 and 4 only

Lime has been found to be the most effective and economical of all additives. Addition of lime to expansive soils reduces swell potential and increases workability and strength. Liquid Limit is decreased and Plastic Limit is increased with increasing lime content resulting in decreased Plasticity Index. Flocculation takes place when lime is mixed with clays.