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Questions and Answers
What type of pavement is prone to alligator cracks?
What type of pavement is prone to alligator cracks?
- Semi-rigid pavement
- Rigid pavement
- Flexible pavement (correct)
- Composite pavement
What is the primary cause of alligator cracks in flexible pavement?
What is the primary cause of alligator cracks in flexible pavement?
- Poor drainage
- Weak aggregate base
- Insufficient thickness of the pavement
- Overloading and traffic (correct)
What is the characteristic pattern of alligator cracks in flexible pavement?
What is the characteristic pattern of alligator cracks in flexible pavement?
- Circular cracks
- Linear cracks
- Interconnected cracks (correct)
- Radial cracks
Why are alligator cracks a concern in flexible pavement?
Why are alligator cracks a concern in flexible pavement?
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What is a common repair method for alligator cracks in flexible pavement?
What is a common repair method for alligator cracks in flexible pavement?
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Study Notes
Pavement and Cracks
- Flexible pavement is prone to alligator cracks.
Causes of Alligator Cracks
- The primary cause of alligator cracks in flexible pavement is fatigue in the asphalt layer due to repeated traffic loading and poor drainage.
Characteristics of Alligator Cracks
- Alligator cracks in flexible pavement are characterized by a pattern of interconnected cracks that resemble the texture of alligator skin.
Concerns of Alligator Cracks
- Alligator cracks are a concern in flexible pavement because they allow water to penetrate the pavement, causing further damage and potentially leading to potholes and other safety hazards.
Repair Methods for Alligator Cracks
- A common repair method for alligator cracks in flexible pavement is to apply a overlay or a surface treatment to seal the cracks and prevent further damage.
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