题目内容

Which is the not the main component of PCC?

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

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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

Geologists classify rocks into three basic types: Which one of the below is not the three basic rock types?

A. Sedimentary Rock
B. Igneous Rock
C. Limestone Rock
D. Metamorphic Roc

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