19.7. Failure of flexible pavements

Try these first

1. 1.

   What is fatigue cracking?

   Hint

   Consider how loads affect material integrity over time.

2. 2.

   Describe rutting in flexible pavements?

   Hint

   Think about the appearance of the pavement under heavy vehicle loads.

3. 3.

   What primarily causes fatigue cracking in pavements?

   • A. Temperature fluctuations
   • B. Repeated vehicle loads
   • C. Material aging

   Hint

   Think about what happens over time with traffic.

4. 4.

   Rutting is a characteristic related to which pavement failure?

   • True
   • False

   Hint

   Consider the shape of the pavement with heavy traffic.

5. 5.

   Design a flexible pavement structure for a region with heavy truck traffic. Consider how the various failures can occur.

   Hint

   Think about each layer's role and the environmental conditions.

6. 6.

   Evaluate a case study of a pavement that experienced extensive thermal cracking and propose methods of mitigation.

   Hint

   Consider the root causes of the thermal issue.