Repeated wheel loads commonly produce which type of distress in an asphalt pavement?
Correct answer: A. Alligator or fatigue cracking
- A. Alligator or fatigue cracking
- B. Hydraulic uplift at the runway threshold
- C. Rail corrugation on the shoulder
- D. Expansion joints in a concrete slab
Explanation
Alligator cracking is a network of interconnected cracks caused mainly by repeated traffic loading and inadequate structural support. Expansion joints are associated with concrete pavement movement, not asphalt fatigue distress.
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About Transportation Engineering
Transportation engineering covers highway planning and alignment, traffic studies, road geometric design, pavement materials and flexible or rigid pavement construction. It also includes railway, airport and traffic engineering concepts such as sight distance, superelevation, signals, capacity and level of service, distinguishing pavement failure from poor geometric design.
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