From a fatigue perspective, the asphalt cement content should be minimized. - Answers FALSE
Stiffness of asphalt concrete increases with decreasing the frequency of loading - Answers FALSE
Performance grading requires that the measured properties of asphalt cements meet a specific
maximum or minimum limit at a specific temperature - Answers TRUE
Aging of asphalt cement decreases viscosity - Answers FALSE
The objective of rotational viscometer testing is to determine asphalt binder flash point - Answers FALSE
All of the following are laboratory tests for asphalt binder characterizations - Answers Brookfield
Rotational Viscometer (RV), Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR)
The PG binder specifications, the property that controls mixture resistance to fatigue cracking is -
Answers G*sin(delta)
All of the following are maximum specifications in the PG binder specification - Answers Resistance to
thermal cracking in terms of stiffness, resistance to rutting, resistance to fatigue cracking
One example of a liquid asphalt is: - Answers cutback
An asphalt concrete mixture test used to estimate resistance to rutting is: - Answers Asphalt Pavement
Analyzer (APA)
The concept of time-temperature superposition is used to characterize asphalt concrete in terms of a
master curve for the following parameter - Answers Stiffness
The best model of material behavior (relaxation modulus) for asphalt concrete is - Answers Generalized
Maxwell with a spring in parallel
All of the following are important steps in the asphalt concrete production and placement process -
Answers Controlling aggregate gradation, completing compaction at high temperature, drying aggregate
The mechanism of asphalt mixture failure caused by repeated loads is - Answers Fatigue
All of the following are advantages the superpave volumetric mix design system for asphalt concrete has
over traditional mix design systems - Answers Inclusion of larger nominal maximum aggregate
gradations, measurement of compactibility, inclusion of modified binders
High binder contents provide all of the following benefit to asphalt concrete mixtures - Answers
Durability, Resistance to fatigue cracking, resistance to thermal cracking
The PG binder specification has the following main advantage over traditional binder grading systems -
Answers Characterization at low pavement temperatures