Question: 1. Find the bituminous distributor pump output required to obtain an application rate of 0.2 gallsq yd (0.91 C/m2), when the spray bar length is 20 ft (6.1 m) and road speed is 450 ft/min (137.3 m/min).
2. What methods are available for rapidly determining the density of a compacted HMA pavement?
3. Explain the difference between a tack coat and a prime coat.