Arkansas AR-AS Asphalt
Contractor Practice Exam |
Questions, Verified Answers &
Detailed Rationales | Complete
Contractor License Exam Prep
Study Guide | Updated 2026
1. What is the primary purpose of asphalt binder in an
asphalt mixture?
A. To provide drainage
B. To increase aggregate size
C. To bind the aggregate particles together
D. To replace the mineral aggregate
Answer: To bind the aggregate particles together
Rationale: Asphalt binder coats and binds aggregate
particles, providing cohesion and helping the finished
pavement resist traffic and environmental stresses.
2. What is the primary purpose of a tack coat?
A. To waterproof the subgrade
B. To increase aggregate density
C. To promote bonding between pavement layers
D. To reduce asphalt binder content
Answer: To promote bonding between pavement layers
Rationale: A tack coat creates adhesion between an
existing surface and a new asphalt layer. Without
adequate tack, slippage and delamination can occur.
3. What is the main purpose of a prime coat?
,A. To polish the asphalt surface
B. To penetrate and prepare an absorbent granular base
for an asphalt layer
C. To replace tack coat on all surfaces
D. To increase the temperature of asphalt
Answer: To penetrate and prepare an absorbent
granular base for an asphalt layer
Rationale: Prime coats are generally associated with
untreated, absorbent aggregate bases. They help bind
loose surface particles and prepare the base for
subsequent paving.
4. Which aggregate characteristic generally contributes
most to good aggregate interlock?
A. Roundness
B. Angularity
C. Low surface texture
D. High moisture content
Answer: Angularity
Rationale: Angular aggregate particles provide
mechanical interlock and generally improve resistance
to movement under traffic.
5. What does HMA commonly stand for?
A. High Moisture Aggregate
B. Hydraulic Mixed Asphalt
C. Hot Mix Asphalt
D. Heavy Mineral Aggregate
Answer: Hot Mix Asphalt
Rationale: HMA is the common abbreviation for hot mix
asphalt, a mixture of asphalt binder and mineral
,aggregates produced and placed at elevated
temperatures.
6. What is the primary purpose of compacting an
asphalt pavement?
A. To increase its air voids
B. To cool it immediately
C. To achieve the required density and improve
pavement performance
D. To remove all asphalt binder
Answer: To achieve the required density and improve
pavement performance
Rationale: Proper compaction reduces excessive air
voids, improves aggregate interlock, increases
durability, and helps prevent premature deformation
and moisture damage.
7. What can happen if hot mix asphalt is not compacted
sufficiently?
A. It becomes completely waterproof
B. It gains excessive density
C. Excessive air voids can remain, reducing durability
D. The aggregate becomes cementitious
Answer: Excessive air voids can remain, reducing
durability
Rationale: Insufficient compaction leaves the pavement
too open, allowing air and water to penetrate more
readily and accelerating oxidation and deterioration.
8. Which piece of equipment is commonly used for
primary compaction of asphalt?
, A. Concrete saw
B. Backhoe
C. Steel-wheel or vibratory roller
D. Water truck only
Answer: Steel-wheel or vibratory roller
Rationale: Steel-wheel and vibratory rollers are
commonly used to densify asphalt mixtures after
placement.
9. What is a pneumatic-tire roller particularly useful for?
A. Excavating the subgrade
B. Kneading and sealing the asphalt mixture during
compaction
C. Milling concrete
D. Producing asphalt binder
Answer: Kneading and sealing the asphalt mixture
during compaction
Rationale: Pneumatic-tire rollers apply a kneading
action that can help improve particle arrangement and
seal the pavement surface.
10. Why is asphalt placement temperature important?
A. Temperature has no effect on compaction
B. Asphalt must always be placed below freezing
C. The mixture must remain workable long enough to
achieve proper compaction and bonding
D. Temperature only affects pavement color
Answer: The mixture must remain workable long enough
to achieve proper compaction and bonding
Rationale: Asphalt loses workability as it cools. If it
becomes too stiff before adequate compaction is
achieved, the required density may not be obtained.
Contractor Practice Exam |
Questions, Verified Answers &
Detailed Rationales | Complete
Contractor License Exam Prep
Study Guide | Updated 2026
1. What is the primary purpose of asphalt binder in an
asphalt mixture?
A. To provide drainage
B. To increase aggregate size
C. To bind the aggregate particles together
D. To replace the mineral aggregate
Answer: To bind the aggregate particles together
Rationale: Asphalt binder coats and binds aggregate
particles, providing cohesion and helping the finished
pavement resist traffic and environmental stresses.
2. What is the primary purpose of a tack coat?
A. To waterproof the subgrade
B. To increase aggregate density
C. To promote bonding between pavement layers
D. To reduce asphalt binder content
Answer: To promote bonding between pavement layers
Rationale: A tack coat creates adhesion between an
existing surface and a new asphalt layer. Without
adequate tack, slippage and delamination can occur.
3. What is the main purpose of a prime coat?
,A. To polish the asphalt surface
B. To penetrate and prepare an absorbent granular base
for an asphalt layer
C. To replace tack coat on all surfaces
D. To increase the temperature of asphalt
Answer: To penetrate and prepare an absorbent
granular base for an asphalt layer
Rationale: Prime coats are generally associated with
untreated, absorbent aggregate bases. They help bind
loose surface particles and prepare the base for
subsequent paving.
4. Which aggregate characteristic generally contributes
most to good aggregate interlock?
A. Roundness
B. Angularity
C. Low surface texture
D. High moisture content
Answer: Angularity
Rationale: Angular aggregate particles provide
mechanical interlock and generally improve resistance
to movement under traffic.
5. What does HMA commonly stand for?
A. High Moisture Aggregate
B. Hydraulic Mixed Asphalt
C. Hot Mix Asphalt
D. Heavy Mineral Aggregate
Answer: Hot Mix Asphalt
Rationale: HMA is the common abbreviation for hot mix
asphalt, a mixture of asphalt binder and mineral
,aggregates produced and placed at elevated
temperatures.
6. What is the primary purpose of compacting an
asphalt pavement?
A. To increase its air voids
B. To cool it immediately
C. To achieve the required density and improve
pavement performance
D. To remove all asphalt binder
Answer: To achieve the required density and improve
pavement performance
Rationale: Proper compaction reduces excessive air
voids, improves aggregate interlock, increases
durability, and helps prevent premature deformation
and moisture damage.
7. What can happen if hot mix asphalt is not compacted
sufficiently?
A. It becomes completely waterproof
B. It gains excessive density
C. Excessive air voids can remain, reducing durability
D. The aggregate becomes cementitious
Answer: Excessive air voids can remain, reducing
durability
Rationale: Insufficient compaction leaves the pavement
too open, allowing air and water to penetrate more
readily and accelerating oxidation and deterioration.
8. Which piece of equipment is commonly used for
primary compaction of asphalt?
, A. Concrete saw
B. Backhoe
C. Steel-wheel or vibratory roller
D. Water truck only
Answer: Steel-wheel or vibratory roller
Rationale: Steel-wheel and vibratory rollers are
commonly used to densify asphalt mixtures after
placement.
9. What is a pneumatic-tire roller particularly useful for?
A. Excavating the subgrade
B. Kneading and sealing the asphalt mixture during
compaction
C. Milling concrete
D. Producing asphalt binder
Answer: Kneading and sealing the asphalt mixture
during compaction
Rationale: Pneumatic-tire rollers apply a kneading
action that can help improve particle arrangement and
seal the pavement surface.
10. Why is asphalt placement temperature important?
A. Temperature has no effect on compaction
B. Asphalt must always be placed below freezing
C. The mixture must remain workable long enough to
achieve proper compaction and bonding
D. Temperature only affects pavement color
Answer: The mixture must remain workable long enough
to achieve proper compaction and bonding
Rationale: Asphalt loses workability as it cools. If it
becomes too stiff before adequate compaction is
achieved, the required density may not be obtained.
