Compaction Test 1- Weight of hammer = 10 kg, Height of fall = 500 mm, Number of layers = 3, Number of blows per layer = 25. Compaction Test 2 - Weight of hammer = 5 kg, Height of fall = 250 mm, Number of layers = 6, Number of blows per layer = 25.
The ratio of compactive energy of compaction test 1 to that of compaction test 2 is: