3.2. Results in increasing the dry density of soil mass.

Try these first

1. 1.

   Define dry density in soil.

   Hint

   Think about mass in relation to volume.

2. 2.

   What is the primary purpose of using admixtures?

   Hint

   Focus on the role of additives like lime or cement.

3. 3.

   What effect does compaction have on dry density?

   • Decreases it
   • Increases it
   • No effect

   Hint

   Think about how particles are rearranged during compaction.

4. 4.

   True or False: Cohesive soils compacted dry of optimum moisture gain lower shear strength than those compacted wet.

   • True
   • False

   Hint

   Consider the structure formed during drying.

5. 5.

   A construction site has a clay soil layer. How would you recommend testing its shear strength for different moisture contents, and what implications do your findings have for construction?

   Hint

   Consider the importance of understanding moisture content for effective soil management.

6. 6.

   Evaluate a scenario where a site has been poorly compacted. What effects can this have on future loads and how would you remedy the situation?

   Hint

   Focus on long-term implications of initial compaction efforts.