INTRO TO ASPHALT QUESTIONS AND
CORRECT ANSWERS
The final product of the SHRP asphalt research program was a new system referred to as SUPERPAVE
which stands for: ✅✅ CORRECT ANSW-Superior Preforming Asphalt Pavements
What basic components compose Asphalt Pavements? ✅✅ CORRECT ANSW-Aggregate, Binder,
and Air Voids
The grade of asphalt binder used most in NCDOT standard SUPERPAVE is ______ ✅✅ CORRECT
ANSW-PG64-22
Performance grade (PG) bunders are designated with grades such as PG64-22. The first number, 64,
us often called the ______ ✅✅ CORRECT ANSW-High Temperature Grade
Performance grade (PG) bunders are designated with grades such as PG64-22. The second number, -
22, us often called the ______ ✅✅ CORRECT ANSW-Low Temperature Grade
Name three basic asphalt mix types ✅✅ CORRECT ANSW-Surface, Intermediate, and Base
Courses
19.0mm mixes are classified as what type of Superpave Mix? ✅✅ CORRECT ANSW-Intermediate
Another name for the document or the "recipe" for an asphalt mix which displays the sources and
grades of materials, blend proportions of aggregates, specific gravity information, and other
applicable data and notes is ✅✅ CORRECT ANSW-The Job Mix Formula
The overall objective in designing asphalt mixes is to determine an economical blend of gradation of
aggregates (within specifications limits) and to a corresponding asphalt content that yields a mix
having: ✅✅ CORRECT ANSW-Sufficient asphalt, a mix resistant to permanent deformation, voids,
and workability
Under the Quality management system (QMS) specification for asphalt pavements, it refers to the
Contractors Responsibility as: ✅✅ CORRECT ANSW-Quality Control
, During the production of mix for a NCDOT project the Contractor must provide a Certified ______
Plant Technician at all times at each plant site used ✅✅ CORRECT ANSW-Level I
Under the NCDOT QMS specification level I, Level II, and roadway Technicians must be certified
through the ______ Technician Certification program. ✅✅ CORRECT ANSW-NCDOT
With each paving operation and at others times during placement of the pavement the contractor
must [provide a certified _____ technician ✅✅ CORRECT ANSW-Roadway
The mixing temperature for a PG 64-22 Superpave asphalt mix is ✅✅ CORRECT ANSW-250-290
degF
What do the 8 digits of the JMF mean? ✅✅ CORRECT ANSW-First 2 are the Year which the design
was approved; The third from the last number us a plant number; the next to the last digit is the
non-strip additive Amount; Last digit is a JMF sequence number based in this mix
What are the two types of asphalt plants commonly used in North Carolina? ✅✅ CORRECT
ANSW-Batch and Drum Plants
True of False - All asphalt plants that produce mix for the NCDOT projects must be certified by the
NCDOT as meeting all requirements if the current NCDOT Standards Specifications ✅✅ CORRECT
ANSW-True
The difference between drum-mix plants and batch mix plants is that within the drum: ✅✅
CORRECT ANSW-All are correct (Mixed with the asphalt binder, The aggregate is dried and heated)
Who's responsibility is it to insure that the proper grade of asphalt binder, as shown on the JMF is
being used? ✅✅ CORRECT ANSW-The QC and QA (Plant and Roadway) Technicians
To avoid truck end segregation the truck should be loaded with a minimum of how many dumps and
where? ✅✅ CORRECT ANSW-3 dumps (the back, center, & front of the bed)
The asphalt mix temperature immediately prior to discharge from the haul vehicle at the roadway
shall be within + _____ ° to -_____ °F of the JMF temperature. ✅✅ CORRECT ANSW-25,-25
CORRECT ANSWERS
The final product of the SHRP asphalt research program was a new system referred to as SUPERPAVE
which stands for: ✅✅ CORRECT ANSW-Superior Preforming Asphalt Pavements
What basic components compose Asphalt Pavements? ✅✅ CORRECT ANSW-Aggregate, Binder,
and Air Voids
The grade of asphalt binder used most in NCDOT standard SUPERPAVE is ______ ✅✅ CORRECT
ANSW-PG64-22
Performance grade (PG) bunders are designated with grades such as PG64-22. The first number, 64,
us often called the ______ ✅✅ CORRECT ANSW-High Temperature Grade
Performance grade (PG) bunders are designated with grades such as PG64-22. The second number, -
22, us often called the ______ ✅✅ CORRECT ANSW-Low Temperature Grade
Name three basic asphalt mix types ✅✅ CORRECT ANSW-Surface, Intermediate, and Base
Courses
19.0mm mixes are classified as what type of Superpave Mix? ✅✅ CORRECT ANSW-Intermediate
Another name for the document or the "recipe" for an asphalt mix which displays the sources and
grades of materials, blend proportions of aggregates, specific gravity information, and other
applicable data and notes is ✅✅ CORRECT ANSW-The Job Mix Formula
The overall objective in designing asphalt mixes is to determine an economical blend of gradation of
aggregates (within specifications limits) and to a corresponding asphalt content that yields a mix
having: ✅✅ CORRECT ANSW-Sufficient asphalt, a mix resistant to permanent deformation, voids,
and workability
Under the Quality management system (QMS) specification for asphalt pavements, it refers to the
Contractors Responsibility as: ✅✅ CORRECT ANSW-Quality Control
, During the production of mix for a NCDOT project the Contractor must provide a Certified ______
Plant Technician at all times at each plant site used ✅✅ CORRECT ANSW-Level I
Under the NCDOT QMS specification level I, Level II, and roadway Technicians must be certified
through the ______ Technician Certification program. ✅✅ CORRECT ANSW-NCDOT
With each paving operation and at others times during placement of the pavement the contractor
must [provide a certified _____ technician ✅✅ CORRECT ANSW-Roadway
The mixing temperature for a PG 64-22 Superpave asphalt mix is ✅✅ CORRECT ANSW-250-290
degF
What do the 8 digits of the JMF mean? ✅✅ CORRECT ANSW-First 2 are the Year which the design
was approved; The third from the last number us a plant number; the next to the last digit is the
non-strip additive Amount; Last digit is a JMF sequence number based in this mix
What are the two types of asphalt plants commonly used in North Carolina? ✅✅ CORRECT
ANSW-Batch and Drum Plants
True of False - All asphalt plants that produce mix for the NCDOT projects must be certified by the
NCDOT as meeting all requirements if the current NCDOT Standards Specifications ✅✅ CORRECT
ANSW-True
The difference between drum-mix plants and batch mix plants is that within the drum: ✅✅
CORRECT ANSW-All are correct (Mixed with the asphalt binder, The aggregate is dried and heated)
Who's responsibility is it to insure that the proper grade of asphalt binder, as shown on the JMF is
being used? ✅✅ CORRECT ANSW-The QC and QA (Plant and Roadway) Technicians
To avoid truck end segregation the truck should be loaded with a minimum of how many dumps and
where? ✅✅ CORRECT ANSW-3 dumps (the back, center, & front of the bed)
The asphalt mix temperature immediately prior to discharge from the haul vehicle at the roadway
shall be within + _____ ° to -_____ °F of the JMF temperature. ✅✅ CORRECT ANSW-25,-25
