NETTCP HMA INSPECTOR QUESTIONS WITH
VERIFIED ACCURATE 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 - Answers - D. all of the above
At higher temperatures, the viscosity of asphalt binder: increases or decreases? -
Answers - 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 - Answers - 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 - Answers - D. None of the above
As an asphalt binder ages, it's viscosity:
Increases or decreases? - Answers - 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. - Answers - 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 - Answers - 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 - Answers - 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:
A. air
B. aggregate
C. binder
D. absorbed binder - Answers - 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 -
Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - D. all of the above
Which of the following is a component of Quality Assurance?
A. Joint agency/Industry support
B. A quality program
C. Quality Assurance specifications
D. All of the above - Answers - D. all of the above
Having an aggregate structure that is continuously graded (sized) from the largest to the
smallest aggregate in the system describes which type of mixtures?
A. Dense graded
B. open and gap graded
C. recycled
D. rubberized - Answers - A. dense graded
Which of the following methods of producing Warm Mix Asphalt is most commonly used
in the United States:
A. Chemical additives
B. Foaming
C. Surfactants
D. Waxing - Answers - Foaming
Which of the following uses for WMA is not an advantage of using WMA over HMA?
A. Areas that require more hand work
B. Paving in cold weather
C. Longer haul distances
D. Compaction aid - Answers - A. Areas that require more hand work
A quality assurance program serves as a skeleton or overall framework necessary for
construction Quality Assurance: T or F - Answers - True
Quality assurance is defined as only those planned and systematic actions taken by the
Agency to provide confidence that a product or facility will perform satisfactorily in
service. T or F - Answers - False
VERIFIED ACCURATE 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 - Answers - D. all of the above
At higher temperatures, the viscosity of asphalt binder: increases or decreases? -
Answers - 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 - Answers - 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 - Answers - D. None of the above
As an asphalt binder ages, it's viscosity:
Increases or decreases? - Answers - 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. - Answers - 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 - Answers - 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 - Answers - 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:
A. air
B. aggregate
C. binder
D. absorbed binder - Answers - 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 -
Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - 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 - Answers - D. all of the above
Which of the following is a component of Quality Assurance?
A. Joint agency/Industry support
B. A quality program
C. Quality Assurance specifications
D. All of the above - Answers - D. all of the above
Having an aggregate structure that is continuously graded (sized) from the largest to the
smallest aggregate in the system describes which type of mixtures?
A. Dense graded
B. open and gap graded
C. recycled
D. rubberized - Answers - A. dense graded
Which of the following methods of producing Warm Mix Asphalt is most commonly used
in the United States:
A. Chemical additives
B. Foaming
C. Surfactants
D. Waxing - Answers - Foaming
Which of the following uses for WMA is not an advantage of using WMA over HMA?
A. Areas that require more hand work
B. Paving in cold weather
C. Longer haul distances
D. Compaction aid - Answers - A. Areas that require more hand work
A quality assurance program serves as a skeleton or overall framework necessary for
construction Quality Assurance: T or F - Answers - True
Quality assurance is defined as only those planned and systematic actions taken by the
Agency to provide confidence that a product or facility will perform satisfactorily in
service. T or F - Answers - False
