3.1. Effect of compaction is to reduce the voids by expelling out air.

Try these first

1. 1.

   What is the primary effect of compaction on soil?

   Hint

   Think about how packing a suitcase changes volume.

2. 2.

   How does compaction affect the permeability of soil?

   Hint

   Consider how tightly packed materials allow water to flow.

3. 3.

   What happens to the density of soil when it is compacted?

   • It decreases
   • It remains the same
   • It increases

   Hint

   Remember the concept of volume reduction.

4. 4.

   True or False: Compaction increases the void spaces within soil.

   • True
   • False

   Hint

   Consider the effects of packing materials tightly.

5. 5.

   Given a clayey soil sample that has been compacted, explain how its shear strength is affected when comparing dry-side and wet-side compaction techniques.

   Hint

   Focus on how the internal arrangements of soil particles change.

6. 6.

   You have a construction project that requires a specific bearing capacity for the foundation. Describe how you would optimize soil compaction to meet these requirements.

   Hint

   Consider what adjustments would enhance soil stability.