19.10. Failure criteria of rigid pavements

Try these first

1. 1.

   What is fatigue cracking in rigid pavements?

   Hint

   Think about the effects of traffic.

2. 2.

   Define pumping.

   Hint

   It occurs when slabs move under load.

3. 3.

   What is the primary failure criterion for rigid pavements?

   • Spalling
   • Fatigue Cracking
   • Pumping

   Hint

   Think about the main types of distress in pavements.

4. 4.

   Is pumping a recognized failure in rigid pavements?

   • True
   • False

   Hint

   Consider how loads affect soil movement.

5. 5.

   Evaluate the impact of neglecting regular maintenance on a rigid pavement showing signs of spalling and pumping.

   Hint

   Think about how unchecked issues can compound.

6. 6.

   From a design perspective, how would you mitigate fatigue cracking in a high-traffic rigid pavement?

   Hint

   Consider both choice of materials and regular service checks.