2025/2026 Exam Questions and Answers
| A+ Score Assured
what is the difference between hot mix asphalt and cold mix asphalt -
🧠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? - 🧠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 - 🧠ANSWER ✔✔patching, slurry seals
what are 3 reasons for the decrease in use of cutback asphalts? -
🧠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 - 🧠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? - 🧠ANSWER ✔✔cationic, medium
setting, 1 viscosity (low), hard
in an asphalt emulsion CSS-1h, what does SS stand for? - 🧠ANSWER
✔✔slow setting
how does the viscosity of AC binder change over time? - 🧠ANSWER ✔✔as
time increases the viscosity increases
define asphalt cement and asphalt concrete. give uses for each -
🧠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? - 🧠ANSWER
✔✔decreases, as temperature increases the asphalt become more runny
what does an asphalt cutback consist of? - 🧠ANSWER ✔✔asphalt concrete
and solvent
what is the cause of rutting - 🧠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 - 🧠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
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