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What is the primary purpose of adding lime to soil in highway construction?
33. What is the primary purpose of adding lime to soil in highway construction?
- Increase shear strength
- Enhance plasticity
- Reduce shrinkage
- Improve drainage
Answer
The correct answer is: A) Increase shear strength
Explanation
Adding lime to soil helps increase its shear strength, thereby enhancing stability and load-bearing capacity, particularly in subgrade and base course construction.