9.2. Composite soil behavior.

Try these first

1. 1.

   What is an admixture?

   Hint

   Think of it as a soil 'additive'.

2. 2.

   How does compaction affect soil density?

   Hint

   Consider the arrangement of particles.

3. 3.

   What is the primary function of admixtures?

   • To color the soil
   • To stabilize the soil
   • To make it heavier

   Hint

   Remember, admixtures are used for stabilization.

4. 4.

   In which condition does clay have higher shear strength?

   • True
   • False

   Hint

   Think about how moisture levels affect soil structure.

5. 5.

   A site manager needs to improve the bearing capacity of a sandy soil for a new building. Given that the site's moisture content is high, what steps should he take considering the principles of soil compaction?

   Hint

   Think about how moisture levels affect compaction and density.

6. 6.

   If a fine-grained soil is compacted wet of optimum, what can you predict about its performance in terms of shear strength and settlement compared to when it is compacted dry of optimum?

   Hint

   Consider the differences in soil structure under varying moisture conditions.