Question

The ratio of compactive energies used in the modified Proctor test to the standard Proctor test is about:

• A. 4.5
• B. 6.5
• C. 2.5
• D. 1.5

Hint:

For Proctor tests, remember: - Standard Proctor Test: Used for low compaction requirements. - Modified Proctor Test: Used for high compaction requirements (energy ratio = 4.5).

Answer 1

The Correct Option is A

The modified Proctor test uses approximately 4.5 times the compactive energy of the standard Proctor test. This is due to the increased hammer weight, drop height, and number of blows used in the modified test to achieve a higher compactive effort.