NICET Construction Materials Testing –
Asphalt Level II certification Exam Questions
And Answers Plus Rationales | Qs & Ans 2026
Instant Pdf Download
This exam covers advanced knowledge beyond Level I, including
Superpave mix design, gyratory compaction, volumetric analysis,
troubleshooting, quality control statistics, binder properties, and
acceptance procedures. Each question includes the correct answer
and a verified rationale.
1. Which Superpave gyratory compactor (SGC) parameter is used to
determine the compaction characteristics of an asphalt mixture?
A) Marshall stability
B) Number of gyrations (Ndesign, Ninitial, Nmax)
C) Viscosity at 60°C
D) Penetration
Answer: B
Rationale: Superpave uses Ninitial, Ndesign, and Nmax gyrations to
evaluate densification and ensure resistance to rutting.
,2. In Superpave mix design, the number of gyrations at Ndesign for
heavy traffic (>30 million ESALs) is typically:
A) 50
B) 75
C) 100
D) 125
Answer: C
Rationale: Traffic level III (>30 million ESALs) uses Ndesign = 100
gyrations per AASHTO M 323.
3. The %Gmm at Ninitial is a measure of:
A) Tensile strength
B) Mixture’s compactability during construction
C) Asphalt content
D) Aggregate gradation
Answer: B
Rationale: %Gmm at Ninitial indicates how easily the mix compacts
under the roller; limits prevent tender mixtures.
4. Which of the following is NOT a required volumetric property in
Superpave mix design?
,A) Air voids (Va) at Ndesign
B) Voids in mineral aggregate (VMA)
C) Voids filled with asphalt (VFA)
D) Marshall flow
Answer: D
Rationale: Superpave does not use Marshall flow; it uses volumetric
properties and gyratory compaction.
5. The dust-to-binder ratio (P200 / Pbe) in Superpave should
typically be between:
A) 0.2 – 0.5
B) 0.6 – 1.2
C) 1.5 – 2.0
D) 2.5 – 3.0
Answer: B
Rationale: Dust proportion (material passing No. 200) to effective
asphalt content ratio is limited to 0.6–1.2 to ensure durability.
6. What does the term “ESAL” stand for?
A) Equivalent Single Axle Load
B) Estimated Structural Axle Limit
, C) Environmental Surface Aging Level
D) Effective Stress Analysis Load
Answer: A
Rationale: ESAL is a measure of traffic loading used in pavement design;
one ESAL represents the damage caused by an 18,000 lb single axle.
7. AASHTO T 312 describes:
A) Preparing and compacting asphalt specimens using the Superpave
gyratory compactor
B) Marshall compaction
C) Asphalt content by ignition
D) Rice specific gravity
Answer: A
Rationale: AASHTO T 312 is the standard method for preparing and
compacting asphalt specimens with the SGC.
8. In AASHTO T 312, the specimen height after compaction at
Ndesign for a 150 mm diameter mold is typically:
A) 50 mm
B) 75 mm
Asphalt Level II certification Exam Questions
And Answers Plus Rationales | Qs & Ans 2026
Instant Pdf Download
This exam covers advanced knowledge beyond Level I, including
Superpave mix design, gyratory compaction, volumetric analysis,
troubleshooting, quality control statistics, binder properties, and
acceptance procedures. Each question includes the correct answer
and a verified rationale.
1. Which Superpave gyratory compactor (SGC) parameter is used to
determine the compaction characteristics of an asphalt mixture?
A) Marshall stability
B) Number of gyrations (Ndesign, Ninitial, Nmax)
C) Viscosity at 60°C
D) Penetration
Answer: B
Rationale: Superpave uses Ninitial, Ndesign, and Nmax gyrations to
evaluate densification and ensure resistance to rutting.
,2. In Superpave mix design, the number of gyrations at Ndesign for
heavy traffic (>30 million ESALs) is typically:
A) 50
B) 75
C) 100
D) 125
Answer: C
Rationale: Traffic level III (>30 million ESALs) uses Ndesign = 100
gyrations per AASHTO M 323.
3. The %Gmm at Ninitial is a measure of:
A) Tensile strength
B) Mixture’s compactability during construction
C) Asphalt content
D) Aggregate gradation
Answer: B
Rationale: %Gmm at Ninitial indicates how easily the mix compacts
under the roller; limits prevent tender mixtures.
4. Which of the following is NOT a required volumetric property in
Superpave mix design?
,A) Air voids (Va) at Ndesign
B) Voids in mineral aggregate (VMA)
C) Voids filled with asphalt (VFA)
D) Marshall flow
Answer: D
Rationale: Superpave does not use Marshall flow; it uses volumetric
properties and gyratory compaction.
5. The dust-to-binder ratio (P200 / Pbe) in Superpave should
typically be between:
A) 0.2 – 0.5
B) 0.6 – 1.2
C) 1.5 – 2.0
D) 2.5 – 3.0
Answer: B
Rationale: Dust proportion (material passing No. 200) to effective
asphalt content ratio is limited to 0.6–1.2 to ensure durability.
6. What does the term “ESAL” stand for?
A) Equivalent Single Axle Load
B) Estimated Structural Axle Limit
, C) Environmental Surface Aging Level
D) Effective Stress Analysis Load
Answer: A
Rationale: ESAL is a measure of traffic loading used in pavement design;
one ESAL represents the damage caused by an 18,000 lb single axle.
7. AASHTO T 312 describes:
A) Preparing and compacting asphalt specimens using the Superpave
gyratory compactor
B) Marshall compaction
C) Asphalt content by ignition
D) Rice specific gravity
Answer: A
Rationale: AASHTO T 312 is the standard method for preparing and
compacting asphalt specimens with the SGC.
8. In AASHTO T 312, the specimen height after compaction at
Ndesign for a 150 mm diameter mold is typically:
A) 50 mm
B) 75 mm
