CE 382 HMA Final Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Basic Philosophy of asphalt mixture design - CORRECT ANSWER Economical
Constructable
meet performance expectations
What are four present day asphalt products? - CORRECT ANSWER Asphalt Cements
Asphalt Emulsifiers (waterproofing
Cutback asphalt (waterproofing)
roof shingles
What is the difference between asphalt and tar? - CORRECT ANSWER asphalt is from
petroleum/crude oil
tar is from coal
Does viscosity increase or decrease as the temperature increases? - CORRECT
ANSWER Viscosity decreases (inverse relationship)
What effect does the rate of loading have on an asphalt pavement? - CORRECT
ANSWER High Temp + low rate = viscous
Low Temp or high rate = elastic
What statistical approach is used in selecting a binder and what are its benefits? - CORRECT
ANSWER A reliability bell curve is plotted to determine the reliability of temperature
ranges for a given region
What is the effective asphalt content? - CORRECT ANSWER Effective asphalt content
is the asphalt not absorbed by the aggregate
, What tests are used to analyze pavement deformation potential of an asphalt binder? -
CORRECT ANSWER Rotational Viscometer
Dynamic Shear Rheometer
Bending Beam Rheometer
Rolling Thin Film Oven
Pressure Aging Vessel
What does the rotational viscometer test help determine? - CORRECT
ANSWER Mixing and compaction temperature
What does the dynamic shear rheometer test help determine? - CORRECT
ANSWER Rutting and pavement deformation
What does the bending beam rheometer test help determine? - CORRECT
ANSWER Low temperature thermal cracking
What does the rolling thin film oven test determine? - CORRECT ANSWER Short
term aging (during mixing, compacting, placement)
What does the pressure aging vessel test determine? - CORRECT ANSWER long term
(10 year) aging
What are the different tests to use on an asphalt mix? - CORRECT ANSWER Rutting
(Hamburg wheel test, French wheel tracking test, asphalt pavement analyzer)
Fatigure (Bending beam rheometer)
Thermal cracking (semi-circular bending test, disc shaped compact tension test, DCT,
TSRST)
What device measures the creep potential of an asphalt binder? - CORRECT
ANSWER Bending beam rheometer
QUESTIONS AND CORRECT ANSWERS
Basic Philosophy of asphalt mixture design - CORRECT ANSWER Economical
Constructable
meet performance expectations
What are four present day asphalt products? - CORRECT ANSWER Asphalt Cements
Asphalt Emulsifiers (waterproofing
Cutback asphalt (waterproofing)
roof shingles
What is the difference between asphalt and tar? - CORRECT ANSWER asphalt is from
petroleum/crude oil
tar is from coal
Does viscosity increase or decrease as the temperature increases? - CORRECT
ANSWER Viscosity decreases (inverse relationship)
What effect does the rate of loading have on an asphalt pavement? - CORRECT
ANSWER High Temp + low rate = viscous
Low Temp or high rate = elastic
What statistical approach is used in selecting a binder and what are its benefits? - CORRECT
ANSWER A reliability bell curve is plotted to determine the reliability of temperature
ranges for a given region
What is the effective asphalt content? - CORRECT ANSWER Effective asphalt content
is the asphalt not absorbed by the aggregate
, What tests are used to analyze pavement deformation potential of an asphalt binder? -
CORRECT ANSWER Rotational Viscometer
Dynamic Shear Rheometer
Bending Beam Rheometer
Rolling Thin Film Oven
Pressure Aging Vessel
What does the rotational viscometer test help determine? - CORRECT
ANSWER Mixing and compaction temperature
What does the dynamic shear rheometer test help determine? - CORRECT
ANSWER Rutting and pavement deformation
What does the bending beam rheometer test help determine? - CORRECT
ANSWER Low temperature thermal cracking
What does the rolling thin film oven test determine? - CORRECT ANSWER Short
term aging (during mixing, compacting, placement)
What does the pressure aging vessel test determine? - CORRECT ANSWER long term
(10 year) aging
What are the different tests to use on an asphalt mix? - CORRECT ANSWER Rutting
(Hamburg wheel test, French wheel tracking test, asphalt pavement analyzer)
Fatigure (Bending beam rheometer)
Thermal cracking (semi-circular bending test, disc shaped compact tension test, DCT,
TSRST)
What device measures the creep potential of an asphalt binder? - CORRECT
ANSWER Bending beam rheometer
