Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1.
What is the primary purpose of an asphalt plant?
A. To crush aggregates
B. To produce hot mix asphalt
C. To test soil compaction
D. To refine crude oil
Answer: B
Rationale: Asphalt plants are specifically designed to combine
aggregate, asphalt binder, and filler materials at controlled
temperatures to produce hot mix asphalt used for paving applications.
2.
,Which component stores and feeds cold aggregates into an asphalt
plant?
A. Dryer drum
B. Cold feed bins
C. Surge silo
D. Baghouse
Answer: B
Rationale: Cold feed bins store different sizes of aggregate and control
their flow onto conveyor belts for proportioning before drying and
heating.
3.
What is the main function of the dryer drum?
A. To mix asphalt binder
B. To heat and dry aggregates
C. To store hot mix
D. To separate dust particles
Answer: B
,Rationale: The dryer drum removes moisture from aggregates and
heats them to the required mixing temperature using a rotating drum
and burner system.
4.
Which material acts as the binding agent in asphalt mix?
A. Cement
B. Lime
C. Bitumen (asphalt cement)
D. Gravel
Answer: C
Rationale: Bitumen, also known as asphalt cement, binds aggregate
particles together to form a cohesive paving material.
5.
What device removes fine dust from exhaust gases in an asphalt plant?
A. Surge silo
B. Baghouse
C. Cold bin feeder
D. Mixer pugmill
, Answer: B
Rationale: The baghouse uses fabric filters to capture fine particulate
matter from exhaust gases, improving air quality and material
recovery.
6.
What is the purpose of the hot elevator?
A. To crush rock
B. To transport heated aggregate to the screen deck
C. To store asphalt binder
D. To cool the mix
Answer: B
Rationale: The hot elevator lifts dried and heated aggregate from the
dryer drum to the screening unit for proper separation.
7.
What happens in the screening unit of an asphalt plant?
A. Asphalt binder is heated
B. Aggregates are separated into sizes