ASPHALT PAVEMENT REVIEW PAPER 2026
COMPLETE QUESTION SET ACCURATE
ANSWERS
◉ What is the California Bearing Ratio (CBR) test used for?
Answer: To assess the strength of the subgrade in place.
◉ What are the four well-known soil classification systems?
Answer: AASHTO, Unified Soil Classification System, Corps of
Engineers, and FAA method.
◉ What is the main objective of asphalt paving mix design?
Answer: To determine an economical blend and gradation of
aggregates and asphalt for desired qualities.
◉ What are the three methods used to design asphalt paving mixes?
Answer: Marshall method, Hveem method, and Superpave method.
◉ What is the target air void range at plant production for asphalt
mixes?
Answer: 3 to 5 percent.
,◉ Who developed the Marshall mix design method?
Answer: Bruce Marshall of the Department of Transportation in
Mississippi in 1939.
◉ What is measured as the maximum load in the Marshall method?
Answer: Stability, measured in pounds when a load is applied to a
temperature-conditioned specimen.
◉ What does the flow measurement in the Marshall method
indicate?
Answer: The degree of deformation at maximum load, expressed in
millimeters or inches.
◉ What prompted the development of the Superpave system?
Answer: Increased traffic volumes, truck traffic, and tire pressures
leading to pavement failures.
◉ What are the three considerations integrated into the Superpave
system?
Answer: Performance-graded binder specifications, aggregate
consensus properties, and Superpave mix design system.
◉ What is the purpose of the Superpave gyratory compactor (SGC)?
, Answer: To produce bulk specimens for evaluation of air voids in
asphalt mixes.
◉ What is the consolidation pressure applied by the SGC?
Answer: 600 kPa (80 psi).
◉ What is the significance of the number of gyrations in the SGC?
Answer: It is a function of the amount of ESALs the pavement will
encounter over a 20-year design life.
◉ What is the significance of using liquid asphalt in surface
treatments?
Answer: It helps in binding and stabilizing the surface layer of the
pavement.
◉ What is the typical thickness requirement for asphalt concrete
surface on well-drained soils?
Answer: 1.5 inches.
◉ What is the thickness requirement for asphalt concrete surface on
soft clay soils?
Answer: 1.5 inches.
COMPLETE QUESTION SET ACCURATE
ANSWERS
◉ What is the California Bearing Ratio (CBR) test used for?
Answer: To assess the strength of the subgrade in place.
◉ What are the four well-known soil classification systems?
Answer: AASHTO, Unified Soil Classification System, Corps of
Engineers, and FAA method.
◉ What is the main objective of asphalt paving mix design?
Answer: To determine an economical blend and gradation of
aggregates and asphalt for desired qualities.
◉ What are the three methods used to design asphalt paving mixes?
Answer: Marshall method, Hveem method, and Superpave method.
◉ What is the target air void range at plant production for asphalt
mixes?
Answer: 3 to 5 percent.
,◉ Who developed the Marshall mix design method?
Answer: Bruce Marshall of the Department of Transportation in
Mississippi in 1939.
◉ What is measured as the maximum load in the Marshall method?
Answer: Stability, measured in pounds when a load is applied to a
temperature-conditioned specimen.
◉ What does the flow measurement in the Marshall method
indicate?
Answer: The degree of deformation at maximum load, expressed in
millimeters or inches.
◉ What prompted the development of the Superpave system?
Answer: Increased traffic volumes, truck traffic, and tire pressures
leading to pavement failures.
◉ What are the three considerations integrated into the Superpave
system?
Answer: Performance-graded binder specifications, aggregate
consensus properties, and Superpave mix design system.
◉ What is the purpose of the Superpave gyratory compactor (SGC)?
, Answer: To produce bulk specimens for evaluation of air voids in
asphalt mixes.
◉ What is the consolidation pressure applied by the SGC?
Answer: 600 kPa (80 psi).
◉ What is the significance of the number of gyrations in the SGC?
Answer: It is a function of the amount of ESALs the pavement will
encounter over a 20-year design life.
◉ What is the significance of using liquid asphalt in surface
treatments?
Answer: It helps in binding and stabilizing the surface layer of the
pavement.
◉ What is the typical thickness requirement for asphalt concrete
surface on well-drained soils?
Answer: 1.5 inches.
◉ What is the thickness requirement for asphalt concrete surface on
soft clay soils?
Answer: 1.5 inches.
