3510 Asphalt UPDATED ACTUAL Exam
Questions and CORRECT Answers
what is the difference between hot mix asphalt and cold mix asphalt - CORRECT
ANSWER - HMA uses heat to decrease the viscosity of the asphalt binder while CMA
uses an emulsifier to lower the viscosity.
how does temperature effect the viscosity of the asphalt mix? - CORRECT ANSWER -
increasing temperature increases the viscosity
-- i think the person is wrong, it should be the higher the temp the lower the viscosity
name 2 uses for asphalt emulsions - CORRECT ANSWER - patching, slurry seals
what are 3 reasons for the decrease in use of cutback asphalts? - CORRECT ANSWER - 1)
Environmental Regulations - They were harmful to ecosystems and watersheds.
2) Safety - The fumes were dangerous to workers.
3) Cost - Cutbacks (like gasoline) often have better uses and are expensive to begin with.
name three benefits of using a filler additive in an asphalt mix - CORRECT ANSWER -
(Any three of the following are acceptable)— Higher density, fewer voids, better stability, better
bond between aggregate and binder, better gradation
what does CMS-1h asphalt mean? - CORRECT ANSWER - cationic, medium setting, 1
viscosity (low), hard
in an asphalt emulsion CSS-1h, what does SS stand for? - CORRECT ANSWER - slow
setting
how does the viscosity of AC binder change over time? - CORRECT ANSWER - as time
increases the viscosity increases
, define asphalt cement and asphalt concrete. give uses for each - CORRECT ANSWER -
Asphalt cement is the binder, which is black and sticky. It is used for sealing and waterproofing.
Asphalt concrete is the asphalt binder plus the aggregates. It is used mainly for hot mix asphalt
pavements (HMA).
as temperature increases, viscosity increases or decreases? - CORRECT ANSWER -
decreases, as temperature increases the asphalt become more runny
what does an asphalt cutback consist of? - CORRECT ANSWER - asphalt concrete and
solvent
what is the cause of rutting - CORRECT ANSWER - low viscosity and high temperatures
with the asphalt
T/F: rutting occurs when asphalt is too soft as a result of high temperature and low viscosity -
CORRECT ANSWER - true
Which is of these is not a component of the Drum Mix Plant?
A. RAP Bin
B. Dryer/Mixer
C. Asphalt Storage Tanks
D. Secondary Collector
E. Batch Tower - CORRECT ANSWER - E. Batch Tower: Batch tower is not part of the
Drum Mix plant process rather is a part of the Batch Plant production and the drum mix it goes
straight from the slat conveyor.
What percentage does asphalt cement binder make up an asphalt pavement mix?
A. 30%
B. 5%
C. 12%
Questions and CORRECT Answers
what is the difference between hot mix asphalt and cold mix asphalt - CORRECT
ANSWER - HMA uses heat to decrease the viscosity of the asphalt binder while CMA
uses an emulsifier to lower the viscosity.
how does temperature effect the viscosity of the asphalt mix? - CORRECT ANSWER -
increasing temperature increases the viscosity
-- i think the person is wrong, it should be the higher the temp the lower the viscosity
name 2 uses for asphalt emulsions - CORRECT ANSWER - patching, slurry seals
what are 3 reasons for the decrease in use of cutback asphalts? - CORRECT ANSWER - 1)
Environmental Regulations - They were harmful to ecosystems and watersheds.
2) Safety - The fumes were dangerous to workers.
3) Cost - Cutbacks (like gasoline) often have better uses and are expensive to begin with.
name three benefits of using a filler additive in an asphalt mix - CORRECT ANSWER -
(Any three of the following are acceptable)— Higher density, fewer voids, better stability, better
bond between aggregate and binder, better gradation
what does CMS-1h asphalt mean? - CORRECT ANSWER - cationic, medium setting, 1
viscosity (low), hard
in an asphalt emulsion CSS-1h, what does SS stand for? - CORRECT ANSWER - slow
setting
how does the viscosity of AC binder change over time? - CORRECT ANSWER - as time
increases the viscosity increases
, define asphalt cement and asphalt concrete. give uses for each - CORRECT ANSWER -
Asphalt cement is the binder, which is black and sticky. It is used for sealing and waterproofing.
Asphalt concrete is the asphalt binder plus the aggregates. It is used mainly for hot mix asphalt
pavements (HMA).
as temperature increases, viscosity increases or decreases? - CORRECT ANSWER -
decreases, as temperature increases the asphalt become more runny
what does an asphalt cutback consist of? - CORRECT ANSWER - asphalt concrete and
solvent
what is the cause of rutting - CORRECT ANSWER - low viscosity and high temperatures
with the asphalt
T/F: rutting occurs when asphalt is too soft as a result of high temperature and low viscosity -
CORRECT ANSWER - true
Which is of these is not a component of the Drum Mix Plant?
A. RAP Bin
B. Dryer/Mixer
C. Asphalt Storage Tanks
D. Secondary Collector
E. Batch Tower - CORRECT ANSWER - E. Batch Tower: Batch tower is not part of the
Drum Mix plant process rather is a part of the Batch Plant production and the drum mix it goes
straight from the slat conveyor.
What percentage does asphalt cement binder make up an asphalt pavement mix?
A. 30%
B. 5%
C. 12%
