题目内容

For an aggregate sample, the moist mass is 500g and the bone-dry mass is 480g, what is its water content?

A. 4.0%
B. 4.2%
C. 2.0%
D. 2.2%

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For an aggregate sample, the percent passing 9.5mm, 4.75mm, and 2.36 sieves are 100%, 95%, and 90%, respectively. What is the nominal maximum aggregate size of the sample?

A. 2.36mm
B. 4.75mm
C. 9.5mm
D. None of above

In an HMA, which parameter will always increase as asphalt binder content increases?

A. VFA
B. VMA
C. VTM
D. Marshall Stability

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

Which is the not the main component of PCC?

A. Hydrated cement
B. Coarse aggregate
C. Fine aggregate
D. water

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