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In pavement design, what does the term 'fatigue cracking' refer to?

Practice Questions

Q1
In pavement design, what does the term 'fatigue cracking' refer to?
  1. Cracking due to thermal expansion
  2. Cracking caused by repeated loading cycles
  3. Cracking from moisture infiltration
  4. Cracking due to poor material selection

Questions & Step-by-Step Solutions

In pavement design, what does the term 'fatigue cracking' refer to?
  • Step 1: Understand that 'fatigue cracking' is a type of damage that happens to pavement.
  • Step 2: Know that this damage occurs because the pavement is used repeatedly, like when cars drive over it many times.
  • Step 3: Realize that each time a vehicle drives over the pavement, it puts stress on the surface.
  • Step 4: Understand that over time, this repeated stress causes small cracks to form in the pavement.
  • Step 5: Recognize that these small cracks can grow larger and lead to more serious damage if not fixed.
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