10. Effect on Pore Pressure

Try these first

1. 1.

   What is pore pressure?

   Hint

   Think about what fills the space between soil particles.

2. 2.

   Does dry compaction or wet compaction typically have lower pore pressure?

   Hint

   Consider how moisture affects the soil.

3. 3.

   What is the impact of compaction moisture on pore pressure in clayey soils?

   • More pore pressure with dry compaction
   • Less pore pressure with dry compaction
   • No impact on pore pressure

   Hint

   Think about how compaction affects fluid pressure in soil.

4. 4.

   True or False: At high strains, pore pressure effects are significantly different for soils compacted dry versus wet.

   • True
   • False

   Hint

   Consider how strain influences soil behavior.

5. 5.

   In a construction project, a clayey site has been identified to build a foundation. If the soil is compacted at optimum moisture, predict and discuss the implication of pore pressure behavior during heavy rains post-construction.

   Hint

   Consider how adding water affects the existing pore pressure.

6. 6.

   Analyze the effects of over-compaction in clay soils and its potential correlation with pore pressure changes. Discuss these effects at low versus high strain.

   Hint

   Focus on how compaction relates to both pressure and moisture levels.