37.2.2. Degradation of Shear Modulus

Try these first

1. 1.

   Define shear modulus.

   Hint

   Remember that G indicates soil resistance.

2. 2.

   What happens to shear modulus when cyclic strain increases?

   Hint

   Consider what occurs during repeated stress applications.

3. 3.

   What does shear modulus represent?

   • Stiffness of soil
   • Weight of soil
   • Color of soil

   Hint

   Think about the role of G in your studies.

4. 4.

   True or False: The shear modulus increases with cyclic strain.

   • True
   • False

   Hint

   Remember how soil reacts to repeated stress.

5. 5.

   A saturated loose sand experiences cyclic loading leading to a drop in shear modulus from 40 MPa to 15 MPa. What does this indicate about its stability during an earthquake?

   Hint

   Reflect on how soil behavior changes under stress!

6. 6.

   Using dynamic modulus curves, how might one predict the shear modulus of a soil after a certain strain level of 5%?

   Hint

   Utilize graphical analysis from your notes.