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NETTCP HMA Inspector Questions with
Detailed Verified Answers
Under a quality assurance specification:
A. the contractor is responsible for QC
B. The agency is responsibile for Acceptance
C. The use of qualified individuals is required
D. All of the above
⼀Answer:- D. all of the above
At higher temperatures, the viscosity of asphalt binder: increases
or decreases?
⼀Answer:- Decreases
The appropriate compaction temperature for HMA is determined
using:
A. temperature viscosity chart
B. equi-viscous temperature ranges
C. a rotational viscometer
D. All of the above
⼀Answer:- D. all of the above
An asphalt binder with a PG grade of 64-22 means that
A. Binder meets performance standards at high temperature of 64
degrees F
B. Binder meets performance standards at low temperature of 22
degrees C
C. Binder meets performance standards at 64 minus 22, or 42
degrees
D. None of the above
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⼀Answer:- D. None of the above
As an asphalt binder ages, it's viscosity:
Increases or decreases?
⼀Answer:- Increases
During which stage in the "life" of an asphalt binder does the most
oxidation occur?
A. During storage
B. During mixing, placing, and compacting of HMA
C. 7 years after the pavement is in place
D. During cycles of freezing and thawing.
⼀Answer:- B. During mixing, placing, and compacting of HMA
The PG binder grading system takes into account:
A. Geographical location of pavement
B. Traffic Levels
C. Levels of reliability
D. All of the above
⼀Answer:- D. all of above
The laboratory determined equi-viscous temperatures for mixing
and compaction:
A. Should be used without regard to field conditions
B. Should be used as a starting point that may require modification
based on field conditions
C. should not be used since it does not represent field conditions.
D. none of the above
⼀Answer:- B. Should be used as a starting point that may require
modification based on field conditions
85-90% of the overall volume of HMA consists of:
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A. air
B. aggregate
C. binder
D. absorbed binder
⼀Answer:- B. aggregate
Specific gravity is best described as:
A. the number of times a subsance is more dense that water
B. the inverse of density
C. the density of water at standard temperature and pressure
D. the apparent loss in mass of an object in water due to the
buoyancy principle
⼀Answer:- A. the number of times a subsance is more dense that
water
Which of the following has the biggest impact on the overall
"strength" of the HMA mixture?
A. Asphalt binder grade used
B. Surface texture of aggregates
C. Specific gravity of the aggregate
D. Angularity and distribution of particles
⼀Answer:- D. Angularity and distribution of particles
The superpave mix design system is distinct from the Marshall
method because:
A. The compaction of lab specimens is performed by a gyratory
compactor
B. Density/voids analysis can be performed at any point during the
compaction process
C. The system provides a coherent and systematic method for
selection of components based on specific situation of traffic and
climactic conditions
D. All of the above
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⼀Answer:- D. all of the above
The design level of ESALs specified for superpave HMA mixtures is
based on
A. Traffic in a 24 hour period
B. The highest anticipated temperature
C. A percentage of the maximum theoretical density
D. 20 year level of traffic
⼀Answer:- D. 20 year level of traffic
Draindown is a term used to describe the separation of the asphalt
binder from the aggregate in which type of mixtures?
A. Dense graded
B. open and gap graded
C. Recycled
D. rubberized
⼀Answer:- B. open and gap graded
A batch plant is different from a drum plant because:
A. The drum is longer and mixes the asphalt with the binder
B. It has a tower that contains hot bins
C. It uses cold feeds
D. It doesnt use a dryer drum
⼀Answer:- B. It has a tower that contains hot bins
When RAP is used in HMA,
A. The virgin binder grade may need to be adjusted based on RAP
percentage
B. the RAP should be stockpiled with respect to dominate particle
size
C. Asphalt binder content should be measured
D. All of the above
NETTCP HMA Inspector Questions with
Detailed Verified Answers
Under a quality assurance specification:
A. the contractor is responsible for QC
B. The agency is responsibile for Acceptance
C. The use of qualified individuals is required
D. All of the above
⼀Answer:- D. all of the above
At higher temperatures, the viscosity of asphalt binder: increases
or decreases?
⼀Answer:- Decreases
The appropriate compaction temperature for HMA is determined
using:
A. temperature viscosity chart
B. equi-viscous temperature ranges
C. a rotational viscometer
D. All of the above
⼀Answer:- D. all of the above
An asphalt binder with a PG grade of 64-22 means that
A. Binder meets performance standards at high temperature of 64
degrees F
B. Binder meets performance standards at low temperature of 22
degrees C
C. Binder meets performance standards at 64 minus 22, or 42
degrees
D. None of the above
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⼀Answer:- D. None of the above
As an asphalt binder ages, it's viscosity:
Increases or decreases?
⼀Answer:- Increases
During which stage in the "life" of an asphalt binder does the most
oxidation occur?
A. During storage
B. During mixing, placing, and compacting of HMA
C. 7 years after the pavement is in place
D. During cycles of freezing and thawing.
⼀Answer:- B. During mixing, placing, and compacting of HMA
The PG binder grading system takes into account:
A. Geographical location of pavement
B. Traffic Levels
C. Levels of reliability
D. All of the above
⼀Answer:- D. all of above
The laboratory determined equi-viscous temperatures for mixing
and compaction:
A. Should be used without regard to field conditions
B. Should be used as a starting point that may require modification
based on field conditions
C. should not be used since it does not represent field conditions.
D. none of the above
⼀Answer:- B. Should be used as a starting point that may require
modification based on field conditions
85-90% of the overall volume of HMA consists of:
, Page | 3
A. air
B. aggregate
C. binder
D. absorbed binder
⼀Answer:- B. aggregate
Specific gravity is best described as:
A. the number of times a subsance is more dense that water
B. the inverse of density
C. the density of water at standard temperature and pressure
D. the apparent loss in mass of an object in water due to the
buoyancy principle
⼀Answer:- A. the number of times a subsance is more dense that
water
Which of the following has the biggest impact on the overall
"strength" of the HMA mixture?
A. Asphalt binder grade used
B. Surface texture of aggregates
C. Specific gravity of the aggregate
D. Angularity and distribution of particles
⼀Answer:- D. Angularity and distribution of particles
The superpave mix design system is distinct from the Marshall
method because:
A. The compaction of lab specimens is performed by a gyratory
compactor
B. Density/voids analysis can be performed at any point during the
compaction process
C. The system provides a coherent and systematic method for
selection of components based on specific situation of traffic and
climactic conditions
D. All of the above
, Page | 4
⼀Answer:- D. all of the above
The design level of ESALs specified for superpave HMA mixtures is
based on
A. Traffic in a 24 hour period
B. The highest anticipated temperature
C. A percentage of the maximum theoretical density
D. 20 year level of traffic
⼀Answer:- D. 20 year level of traffic
Draindown is a term used to describe the separation of the asphalt
binder from the aggregate in which type of mixtures?
A. Dense graded
B. open and gap graded
C. Recycled
D. rubberized
⼀Answer:- B. open and gap graded
A batch plant is different from a drum plant because:
A. The drum is longer and mixes the asphalt with the binder
B. It has a tower that contains hot bins
C. It uses cold feeds
D. It doesnt use a dryer drum
⼀Answer:- B. It has a tower that contains hot bins
When RAP is used in HMA,
A. The virgin binder grade may need to be adjusted based on RAP
percentage
B. the RAP should be stockpiled with respect to dominate particle
size
C. Asphalt binder content should be measured
D. All of the above
