4.3. Methods for Soil Strength Evaluation

Try these first

1. 1.

   What does the CBR test measure?

   Hint

   Think about resistance to penetration.

2. 2.

   Name one laboratory test for evaluating soil strength.

   Hint

   Consider tests conducted on soil samples in a lab setting.

3. 3.

   What is the purpose of the CBR test?

   • To measure shear strength
   • To determine the bearing capacity of soil
   • To assess consolidation properties

   Hint

   Think about soil performance under loads.

4. 4.

   True or False: The DCPT can be correlated with CBR values.

   • True
   • False

   Hint

   Remember how DCPT results relate to other evaluations.

5. 5.

   Given a CBR value of 15%, determine the necessary pavement thickness for a flexible pavement design according to standard guidelines.

   Hint

   Check empirical designs tables for CBR to pavement thickness.

6. 6.

   If the UCS of a soil is 300 kPa and the moisture content is increased, predict the potential trend of UCS and explain.

   Hint

   Consider how moisture affects soil behavior.