Alligator (map/fatigue) cracking in a flexible pavement indicates:
Choose the correct answer
Excess compaction during construction
Repeated overstressing of bituminous layer due to heavy traffic beyond design life or inadequate thickness
Thermal cracking due to low temperature
Bleeding of bitumen to surface
Correct Answer
B. Repeated overstressing of bituminous layer due to heavy traffic beyond design life or inadequate thickness
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Alligator cracking (fatigue cracking) = interconnected cracks forming a pattern like alligator skin, appearing in the wheel path. Caused by flexural fatigue of bituminous layers under repeated load applications exceeding the fatigue limit. Indicates structural failure.
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