8.2. Behavior at higher pressure is similar.

Try these first

1. 1.

   What is the primary purpose of adding admixtures to soil?

   Hint

   Think of what we do to improve soil's ability to support structures.

2. 2.

   How does compaction affect the density of soil?

   Hint

   Consider how tightly packed the soil becomes.

3. 3.

   What is the role of admixtures in soil?

   • Stabilize soil
   • Increase water retention
   • Decrease density

   Hint

   Consider what the term 'admixture' implies.

4. 4.

   True or False: Compacted dry soils have greater shear strength than wet compacted soils.

   • True
   • False

   Hint

   Recall the impacts of moisture on soil structure.

5. 5.

   Consider a construction site where wet-cement soil is used, leading to unexpected settlements. Analyze the compaction methods that could have been applied and their expected outcomes if dry methods were used instead.

   Hint

   Explore the differences between dry and wet methods.

6. 6.

   A geotechnical engineer finds that a clayey soil exhibits high pore pressures during excavation. What methods can the engineer implement to lower these pore pressures effectively?

   Hint

   Identify techniques related to moisture management.