3510 student questions: asphalt UPDATED ACTUAL Exam
Questions and CORRECT Answers
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? - decreases, as temperature increases
the asphalt become more runny
what does an asphalt cutback consist of? - asphalt concrete and solvent
what is the cause of rutting - 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 -
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 - 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%
, D. 19% - B. 5%
name at least 4 types of asphalt distress - alligator cracking, bleeding, block cracking, rutting
if you are trying to increase tensile strength in your asphalt what additive would you add? - fibers
what happens to binder viscosity as temperature increases? - viscosity decreases (binder becomes
more liquid)
how do fibers effect asphalt mix? - increases tensile strength and cohesion of the mix
what liquid is a low viscosity asphalt most like? - water
what happens if asphalt is too viscous - becomes too brittle, causing thermal cracking
why are asphalt emulsions used? - the emulsions allow the asphalt to be placed at colder
temperatures
is asphalt more or less viscous in hot climates? - less viscous (more flowable)
what are some applications of hot mix asphalt? - pavement surface and patching
list the types of asphalt used in pavement - asphalt cement, asphalt emulsion, asphalt cutback
asphalt requires either tar or byproducts from what industry? - petroleum industry
what does superpave stand for - superior performing asphalt pavements
Questions and CORRECT Answers
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? - decreases, as temperature increases
the asphalt become more runny
what does an asphalt cutback consist of? - asphalt concrete and solvent
what is the cause of rutting - 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 -
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 - 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%
, D. 19% - B. 5%
name at least 4 types of asphalt distress - alligator cracking, bleeding, block cracking, rutting
if you are trying to increase tensile strength in your asphalt what additive would you add? - fibers
what happens to binder viscosity as temperature increases? - viscosity decreases (binder becomes
more liquid)
how do fibers effect asphalt mix? - increases tensile strength and cohesion of the mix
what liquid is a low viscosity asphalt most like? - water
what happens if asphalt is too viscous - becomes too brittle, causing thermal cracking
why are asphalt emulsions used? - the emulsions allow the asphalt to be placed at colder
temperatures
is asphalt more or less viscous in hot climates? - less viscous (more flowable)
what are some applications of hot mix asphalt? - pavement surface and patching
list the types of asphalt used in pavement - asphalt cement, asphalt emulsion, asphalt cutback
asphalt requires either tar or byproducts from what industry? - petroleum industry
what does superpave stand for - superior performing asphalt pavements
