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Ohio Asphalt Technician Level 1 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS LATEST
UPDATE THIS YEAR
Ohio Asphalt Technician Level 1 Certification Exam
10-Line Exam Coverage
1. Volumetric Properties – Understanding air voids (VTM), VMA (voids in mineral
aggregate), VFA (voids filled with asphalt), and their target ranges for mix design .
2. Superpave Mix Design – Gyratory compaction method, N-design levels for traffic, and
performance-graded (PG) binder selection based on climate .
3. Aggregate Testing – Sieve analysis (gradation), specific gravity (bulk, SSD, apparent), LA
abrasion, and deleterious materials content .
4. Asphalt Binder Testing – PG grading, viscosity, penetration, ductility, and binder specific
gravity determination .
5. HMA Production & Sampling – Plant inspection, random sampling procedures,
quartering/splitting samples, and temperature monitoring .
6. Laboratory Compaction – Superpave gyratory compactor operation, specimen height
and density calculations, and correcting for mix lift thickness .
7. Density Testing – Maximum theoretical specific gravity (Gmm), bulk specific gravity
(Gmb) of compacted specimens, and percent compaction calculations .
8. ODOT Specifications – Supplement 1042 (Quality Control), applicable ODOT
construction and material specifications, and approval requirements .
9. Practical Lab Exam – Hands-on proficiency in ignition oven asphalt content, gradation
analysis, Gmm, and Gmb testing with passing criteria .
10. Safety & Ethics – Laboratory safety, hot mix handling hazards, and professional ethics for
quality control technicians .
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200 MCQs with Rationales – Ohio Asphalt Technician Level 1 Exam
Section 1: Asphalt Materials & Volumetrics (Q 1-40)
1. In Superpave mix design, what does VMA represent?
A) Voids in mineral aggregate
B) Volume of maximum aggregate
C) Voids in mixed asphalt
D) Volume of mineral asphalt
Correct Answer: A) Voids in mineral aggregate
Rationale: VMA (Voids in Mineral Aggregate) is the volume of intergranular void space between
the aggregate particles in a compacted mix, expressed as a percentage of total volume .
2. The target air void content (VTM) for Superpave mix design is typically:
A) 2-3%
B) 4-5%
C) 6-8%
D) 10-12%
Correct Answer: B) 4-5%
Rationale: Superpave mix design targets 4% air voids at N-design; field compaction typically
achieves 7-8% air voids after cooling .
3. What does VFA (Voids Filled with Asphalt) represent?
A) The percentage of VMA filled with effective asphalt binder
B) The total asphalt content in the mix
C) The air voids in the compacted specimen
D) The aggregate specific gravity
Correct Answer: A) The percentage of VMA filled with effective asphalt binder
Rationale: VFA indicates how much of the void space between aggregates is filled with asphalt
binder, affecting durability and cracking resistance.
4. Which property measures the total volume of voids between aggregate particles including
those filled with asphalt?
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A) VTM
B) VMA
C) VFA
D) Gmm
Correct Answer: B) VMA
Rationale: VMA includes all intergranular void space, both air voids and asphalt-filled voids; it is
a critical durability parameter .
5. The effective asphalt binder content is calculated as:
A) Total asphalt – absorbed asphalt
B) Total asphalt + absorbed asphalt
C) Total asphalt – aggregate weight
D) Total asphalt + aggregate weight
Correct Answer: A) Total asphalt – absorbed asphalt
Rationale: Effective binder is the portion of total asphalt that remains on the aggregate surface
and contributes to coating and durability.
6. What is the typical VMA requirement for a 12.5 mm NMAS Superpave mix?
A) 12-14%
B) 14-15%
C) 15-17%
D) 18-20%
Correct Answer: B) 14-15%
Rationale: VMA requirements increase as nominal maximum aggregate size (NMAS) decreases;
12.5 mm mixes require approximately 14-15% VMA .
7. A mix with air voids below 3% at N-design may have which problem?
A) Excessive rutting potential
B) Flushing and bleeding
C) Low durability
D) Poor workability
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Correct Answer: B) Flushing and bleeding
Rationale: Overly dense mixes (low air voids) have insufficient space for asphalt expansion,
leading to flushing and bleeding under traffic.
8. What does Gmm represent in asphalt testing?
A) Maximum specific gravity of loose mix
B) Bulk specific gravity of compacted mix
C) Aggregate specific gravity
D) Binder specific gravity
Correct Answer: A) Maximum specific gravity of loose mix
Rationale: Gmm is the theoretical maximum density of asphalt mix with no air voids; used to
calculate air voids in compacted specimens .
9. The formula for calculating air voids (VTM) is:
A) 100 × (1 – Gmb/Gmm)
B) 100 × (1 – Gmm/Gmb)
C) 100 × (Gmb – Gmm)
D) 100 × (Gmm – Gmb)
Correct Answer: A) 100 × (1 – Gmb/Gmm)
Rationale: Air voids = (1 – bulk specific gravity/maximum theoretical specific gravity) × 100% .
10. If Gmb = 2.400 and Gmm = 2.500, what is the air void content?
A) 2.0%
B) 4.0%
C) 6.0%
D) 8.0%
Correct Answer: B) 4.0%
Rationale: VTM = (1 – 2.400/2.500) × 100 = (1 – 0.96) × 100 = 4.0% air voids .
11. Which aggregate property is most directly related to asphalt absorption?
A) Particle shape
B) Specific gravity
Ohio Asphalt Technician Level 1 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS LATEST
UPDATE THIS YEAR
Ohio Asphalt Technician Level 1 Certification Exam
10-Line Exam Coverage
1. Volumetric Properties – Understanding air voids (VTM), VMA (voids in mineral
aggregate), VFA (voids filled with asphalt), and their target ranges for mix design .
2. Superpave Mix Design – Gyratory compaction method, N-design levels for traffic, and
performance-graded (PG) binder selection based on climate .
3. Aggregate Testing – Sieve analysis (gradation), specific gravity (bulk, SSD, apparent), LA
abrasion, and deleterious materials content .
4. Asphalt Binder Testing – PG grading, viscosity, penetration, ductility, and binder specific
gravity determination .
5. HMA Production & Sampling – Plant inspection, random sampling procedures,
quartering/splitting samples, and temperature monitoring .
6. Laboratory Compaction – Superpave gyratory compactor operation, specimen height
and density calculations, and correcting for mix lift thickness .
7. Density Testing – Maximum theoretical specific gravity (Gmm), bulk specific gravity
(Gmb) of compacted specimens, and percent compaction calculations .
8. ODOT Specifications – Supplement 1042 (Quality Control), applicable ODOT
construction and material specifications, and approval requirements .
9. Practical Lab Exam – Hands-on proficiency in ignition oven asphalt content, gradation
analysis, Gmm, and Gmb testing with passing criteria .
10. Safety & Ethics – Laboratory safety, hot mix handling hazards, and professional ethics for
quality control technicians .
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200 MCQs with Rationales – Ohio Asphalt Technician Level 1 Exam
Section 1: Asphalt Materials & Volumetrics (Q 1-40)
1. In Superpave mix design, what does VMA represent?
A) Voids in mineral aggregate
B) Volume of maximum aggregate
C) Voids in mixed asphalt
D) Volume of mineral asphalt
Correct Answer: A) Voids in mineral aggregate
Rationale: VMA (Voids in Mineral Aggregate) is the volume of intergranular void space between
the aggregate particles in a compacted mix, expressed as a percentage of total volume .
2. The target air void content (VTM) for Superpave mix design is typically:
A) 2-3%
B) 4-5%
C) 6-8%
D) 10-12%
Correct Answer: B) 4-5%
Rationale: Superpave mix design targets 4% air voids at N-design; field compaction typically
achieves 7-8% air voids after cooling .
3. What does VFA (Voids Filled with Asphalt) represent?
A) The percentage of VMA filled with effective asphalt binder
B) The total asphalt content in the mix
C) The air voids in the compacted specimen
D) The aggregate specific gravity
Correct Answer: A) The percentage of VMA filled with effective asphalt binder
Rationale: VFA indicates how much of the void space between aggregates is filled with asphalt
binder, affecting durability and cracking resistance.
4. Which property measures the total volume of voids between aggregate particles including
those filled with asphalt?
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A) VTM
B) VMA
C) VFA
D) Gmm
Correct Answer: B) VMA
Rationale: VMA includes all intergranular void space, both air voids and asphalt-filled voids; it is
a critical durability parameter .
5. The effective asphalt binder content is calculated as:
A) Total asphalt – absorbed asphalt
B) Total asphalt + absorbed asphalt
C) Total asphalt – aggregate weight
D) Total asphalt + aggregate weight
Correct Answer: A) Total asphalt – absorbed asphalt
Rationale: Effective binder is the portion of total asphalt that remains on the aggregate surface
and contributes to coating and durability.
6. What is the typical VMA requirement for a 12.5 mm NMAS Superpave mix?
A) 12-14%
B) 14-15%
C) 15-17%
D) 18-20%
Correct Answer: B) 14-15%
Rationale: VMA requirements increase as nominal maximum aggregate size (NMAS) decreases;
12.5 mm mixes require approximately 14-15% VMA .
7. A mix with air voids below 3% at N-design may have which problem?
A) Excessive rutting potential
B) Flushing and bleeding
C) Low durability
D) Poor workability
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Correct Answer: B) Flushing and bleeding
Rationale: Overly dense mixes (low air voids) have insufficient space for asphalt expansion,
leading to flushing and bleeding under traffic.
8. What does Gmm represent in asphalt testing?
A) Maximum specific gravity of loose mix
B) Bulk specific gravity of compacted mix
C) Aggregate specific gravity
D) Binder specific gravity
Correct Answer: A) Maximum specific gravity of loose mix
Rationale: Gmm is the theoretical maximum density of asphalt mix with no air voids; used to
calculate air voids in compacted specimens .
9. The formula for calculating air voids (VTM) is:
A) 100 × (1 – Gmb/Gmm)
B) 100 × (1 – Gmm/Gmb)
C) 100 × (Gmb – Gmm)
D) 100 × (Gmm – Gmb)
Correct Answer: A) 100 × (1 – Gmb/Gmm)
Rationale: Air voids = (1 – bulk specific gravity/maximum theoretical specific gravity) × 100% .
10. If Gmb = 2.400 and Gmm = 2.500, what is the air void content?
A) 2.0%
B) 4.0%
C) 6.0%
D) 8.0%
Correct Answer: B) 4.0%
Rationale: VTM = (1 – 2.400/2.500) × 100 = (1 – 0.96) × 100 = 4.0% air voids .
11. Which aggregate property is most directly related to asphalt absorption?
A) Particle shape
B) Specific gravity
