2.10.1. Definition

Try these first

1. 1.

   What does the resilient modulus measure?

   Hint

   Think about how soil behaves under load.

2. 2.

   What is the formula for calculating resilient modulus?

   Hint

   Consider what each variable in the equation represents.

3. 3.

   What does resilient modulus represent?

   • The stress applied to the soil
   • The ratio of axial stress to recoverable strain
   • The total deformation of the soil

   Hint

   Focus on the definition of resilient modulus.

4. 4.

   True or False: A higher resilient modulus indicates a stiffer material.

   • True
   • False

   Hint

   Think about how flexibility and rigidity relate to modulus.

5. 5.

   Calculate the resilient modulus for a soil sample that experienced an axial stress of 120 kPa with a recoverable strain of 0.015.

   Hint

   Make sure to use the formula correctly to find Mr.

6. 6.

   Discuss the potential effects of a low resilient modulus in a subgrade soil on pavement design. How would you mitigate these issues?

   Hint

   Think about how to improve soil characteristics and pavement structures.