20. In the PCA design procedure of rigid highway pavements, the fatigue damage analysis is based on the center-slab tensile stress calculated at the bottom of the slab. a. True b. False
20. In the PCA design procedure of rigid highway pavements, the fatigue damage analysis is based on the
center-slab tensile stress calculated at the bottom of the slab.
a. True
b. False
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
22. In the PCA design procedure of rigid highway pavements, the fatigue damage is calculated at the
pavement edge.
a. True
b. False
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
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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