Which of the following methods could always increase the high temperature stability of asphalt concrete?
A. Using more coarse aggregate in an asphalt concrete
B. Using more fine aggregate in an asphalt concrete
C. Using a low penetration grade asphalt binder
D. None of above
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Which is the not the main component of PCC?
A. Hydrated cement
B. Coarse aggregate
C. Fine aggregate
D. water
The required compressive strength of PCC is measured at
A. 3 days
B. 7 days
C. 14 days
D. 28days
When the water cement ratio exceeds the specified maximum requirements, what of the following statement is right？
A. Strength will higher
B. Workability will be better
C. Stiffness will be higher
Durability is better
Which lab test is used to prepare asphalt samples for short-term aging evaluations.
A. Rolling Thin-Film Oven (RTFO) tes
B. Pressure-Aging Vessel （PAV）test
C. Brookfield test
Dynamic Shear Rheometer test
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