6.5. Activity

Try these first

1. 1.

   Define what is meant by soil activity.

   Hint

   Think about how clay affects soil behavior.

2. 2.

   What does LI stand for?

   Hint

   Consider the measurement related to moisture in soil.

3. 3.

   What does the Activity of a soil indicate?

   • Water content
   • Plasticity related to clay content
   • Gravel content

   Hint

   Think of how clay influences swelling.

4. 4.

   True or False: A liquefied soil has a Liquidity Index of less than 1.

   • True
   • False

   Hint

   Remember the definitions of fluid states.

5. 5.

   A construction site uses soil with an activity of 1.5 and a fluidity index of 0.3. Discuss potential risks and recommendations regarding construction.

   Hint

   Evaluate how moisture affects clay behavior.

6. 6.

   Given the plasticity index of a soil is 10% with a current water content of 20%, what is its liquidity index and classification? What does this mean for its use in construction?

   Hint

   Find the WL to apply the formula correctly.