Q.21. In the PCA design procedure of rigid highway pavements, as the stress ratio (applied flexural stress divided by 28-day modulus of rupture) decreases, the allowable load repetitions increases. a. True b. False
Q.21. In the PCA design procedure of rigid highway pavements, as the stress ratio (applied flexural stress
divided by 28-day modulus of rupture) decreases, the allowable load repetitions increases.
a. True
b. False
Q_22. In the PCA design procedure of rigid highway pavements, the fatigue damage is calculated at the
pavement edge.
a. True
b. False
Q_23. In the PCA design procedure of rigid highway pavements, the erosion damage analysis was devised to
control the following distresses:
a. Subgrade erosion, pumping and faulting
b. Shattered slab and ASR
c. Shrinkage cracking and joint sealant deterioration
d. None of the above
Q_27. The PCA design methodology for airfield rigid pavements is based on the interior bending stress at the
bottom of the slab.
a. True
b. False
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