Question: Why might a pavement with a valid 2 0 year design might fail before normal 2 0 years life? A . Significant increase in moisture

Why might a pavement with a valid 20year design might fail before normal 20 years life?
A. Significant increase in moisture over value used in design
B. Actual truck traffic increases exceed expected values
C. Differences in Modulus of resiliency especially with temperature variation over the year
D. All of above

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