Arizona A-14 Asphalt Paving Exam LATEST QUESTIONS AND
CORRECT ANSWERS GRADE A
1. According to the Arizona Department of Transportation (ADOT) Standard Specifications, the primary
purpose of a prime coat is to:
A) Provide a smooth riding surface
B) Bond a new asphalt layer to an existing granular base
C) Seal the surface from water penetration
D) Reduce oxidation of the asphalt binder
ANSWER: B) Bond a new asphalt layer to an existing granular base
EXPLANATION: A prime coat is a sprayed application of emulsified asphalt or cutback asphalt applied to
a prepared granular base. Its main function is to penetrate and bond the loose particles of the base,
creating a cohesive, water-resistant surface that will form a strong bond with the subsequent asphalt
lift.
2. When placing a leveling course, the typical maximum tolerance for the finished surface when checked
with a 10-foot straightedge is:
A) 1/8 inch
B) 1/4 inch
C) 3/8 inch
D) 1/2 inch
ANSWER: B) 1/4 inch
EXPLANATION: For leveling courses, ADOT specifications generally allow a tolerance of 1/4 inch in 10
feet. This is a critical specification to ensure the subsequent surface course can be placed at the proper
thickness and smoothness.
3. The "JMF" in asphalt paving refers to the:
A) Joint Matching Formula
B) Job Mix Formula
,C) Justified Measurement Factor
D) Joint Measurement Form
ANSWER: B) Job Mix Formula
EXPLANATION: The Job Mix Formula (JMF) is the approved mixture design that specifies the exact
proportions of aggregate, asphalt binder, and any modifiers or additives. It is the target against which all
production is controlled and verified.
4. A deficiency in asphalt binder content is most likely to cause which of the following pavement
distresses?
A) Rutting
B) Flushing/bleeding
C) Raveling
D) Shoving
ANSWER: C) Raveling
EXPLANATION: Raveling is the loss of aggregate from the pavement surface, creating a rough, pitted
texture. It is often caused by insufficient asphalt binder to adequately coat and hold the aggregate
particles together, especially under traffic and environmental effects.
5. The primary purpose of a tack coat is to:
A) Provide a waterproof layer
B) Ensure a strong bond between asphalt pavement lifts
C) Fill surface voids in the existing pavement
D) Improve the skid resistance of the final surface
ANSWER: B) Ensure a strong bond between asphalt pavement lifts
EXPLANATION: A tack coat is a light, uniform application of emulsified asphalt (usually diluted) sprayed
onto an existing asphalt surface prior to placing a new lift. It creates a vital adhesive bond between the
old and new layers, preventing slippage and delamination.
,6. In Arizona, the standard method for determining the asphalt content of a mixture is:
A) The Marshall Hammer test
B) The nuclear gauge method
C) The ignition oven method (AASHTO T 308)
D) The sand cone test
ANSWER: C) The ignition oven method (AASHTO T 308)
EXPLANATION: The ignition oven method is the most common and precise test used for quality
control/quality assurance. It involves burning off the asphalt binder from a sample at high temperature
and calculating the content by weight loss. It has largely replaced solvent extraction methods.
7. According to ADOT specifications, the minimum pavement temperature for placing and compacting
dense-graded asphalt mixtures is typically:
A) 40°F
B) 50°F
C) 225°F
D) 275°F
ANSWER: B) 50°F
EXPLANATION: Placement and compaction must occur when both the air temperature and the
pavement base temperature are at least 50°F and rising. Compaction below this temperature is
ineffective, leading to inadequate density and premature failure.
8. The maximum density of an asphalt mix is determined in the laboratory using the:
A) Marshall Compactor
B) Gyratory Compactor (Superpave)
C) California Bearing Ratio (CBR) test
D) Proctor Hammer
ANSWER: B) Gyratory Compactor (Superpave)
, EXPLANATION: The Superpave gyratory compactor (AASHTO T 312) simulates the kneading action of
field compaction. It is used to fabricate specimens to determine the mixture's theoretical maximum
density (Gmm), which is the benchmark for calculating field compaction percentages.
9. "Segregation" in asphalt paving refers to:
A) The separation of asphalt binder from the aggregate
B) An uneven distribution of coarse and fine aggregate particles in the mat
C) The oxidation of the asphalt surface
D) The formation of cracks along longitudinal joints
ANSWER: B) An uneven distribution of coarse and fine aggregate particles in the mat
EXPLANATION: Segregation appears as areas of predominantly coarse aggregate (with low binder
content and high air voids) next to areas of predominantly fine aggregate. It causes uneven compaction,
permeability, and accelerated raveling and cracking. It can occur during truck loading, hauling, or
placement.
10. The most critical factor for achieving proper density during compaction is:
A) The number of roller passes
B) The mix temperature during compaction
C) The type of roller used
D) The thickness of the lift
ANSWER: B) The mix temperature during compaction
EXPLANATION: While all factors are important, temperature is paramount. Asphalt is a thermoplastic
material; it is most workable and responsive to compaction forces when it is hot. The compaction
window is the time when the mix is between the rolling temperatures specified in the JMF.
11. A "Longitudinal Joint" is formed where:
A) Two paving lanes meet end-to-end
B) Two adjacent paving lanes are placed side-by-side
C) The pavement meets a curb or shoulder
CORRECT ANSWERS GRADE A
1. According to the Arizona Department of Transportation (ADOT) Standard Specifications, the primary
purpose of a prime coat is to:
A) Provide a smooth riding surface
B) Bond a new asphalt layer to an existing granular base
C) Seal the surface from water penetration
D) Reduce oxidation of the asphalt binder
ANSWER: B) Bond a new asphalt layer to an existing granular base
EXPLANATION: A prime coat is a sprayed application of emulsified asphalt or cutback asphalt applied to
a prepared granular base. Its main function is to penetrate and bond the loose particles of the base,
creating a cohesive, water-resistant surface that will form a strong bond with the subsequent asphalt
lift.
2. When placing a leveling course, the typical maximum tolerance for the finished surface when checked
with a 10-foot straightedge is:
A) 1/8 inch
B) 1/4 inch
C) 3/8 inch
D) 1/2 inch
ANSWER: B) 1/4 inch
EXPLANATION: For leveling courses, ADOT specifications generally allow a tolerance of 1/4 inch in 10
feet. This is a critical specification to ensure the subsequent surface course can be placed at the proper
thickness and smoothness.
3. The "JMF" in asphalt paving refers to the:
A) Joint Matching Formula
B) Job Mix Formula
,C) Justified Measurement Factor
D) Joint Measurement Form
ANSWER: B) Job Mix Formula
EXPLANATION: The Job Mix Formula (JMF) is the approved mixture design that specifies the exact
proportions of aggregate, asphalt binder, and any modifiers or additives. It is the target against which all
production is controlled and verified.
4. A deficiency in asphalt binder content is most likely to cause which of the following pavement
distresses?
A) Rutting
B) Flushing/bleeding
C) Raveling
D) Shoving
ANSWER: C) Raveling
EXPLANATION: Raveling is the loss of aggregate from the pavement surface, creating a rough, pitted
texture. It is often caused by insufficient asphalt binder to adequately coat and hold the aggregate
particles together, especially under traffic and environmental effects.
5. The primary purpose of a tack coat is to:
A) Provide a waterproof layer
B) Ensure a strong bond between asphalt pavement lifts
C) Fill surface voids in the existing pavement
D) Improve the skid resistance of the final surface
ANSWER: B) Ensure a strong bond between asphalt pavement lifts
EXPLANATION: A tack coat is a light, uniform application of emulsified asphalt (usually diluted) sprayed
onto an existing asphalt surface prior to placing a new lift. It creates a vital adhesive bond between the
old and new layers, preventing slippage and delamination.
,6. In Arizona, the standard method for determining the asphalt content of a mixture is:
A) The Marshall Hammer test
B) The nuclear gauge method
C) The ignition oven method (AASHTO T 308)
D) The sand cone test
ANSWER: C) The ignition oven method (AASHTO T 308)
EXPLANATION: The ignition oven method is the most common and precise test used for quality
control/quality assurance. It involves burning off the asphalt binder from a sample at high temperature
and calculating the content by weight loss. It has largely replaced solvent extraction methods.
7. According to ADOT specifications, the minimum pavement temperature for placing and compacting
dense-graded asphalt mixtures is typically:
A) 40°F
B) 50°F
C) 225°F
D) 275°F
ANSWER: B) 50°F
EXPLANATION: Placement and compaction must occur when both the air temperature and the
pavement base temperature are at least 50°F and rising. Compaction below this temperature is
ineffective, leading to inadequate density and premature failure.
8. The maximum density of an asphalt mix is determined in the laboratory using the:
A) Marshall Compactor
B) Gyratory Compactor (Superpave)
C) California Bearing Ratio (CBR) test
D) Proctor Hammer
ANSWER: B) Gyratory Compactor (Superpave)
, EXPLANATION: The Superpave gyratory compactor (AASHTO T 312) simulates the kneading action of
field compaction. It is used to fabricate specimens to determine the mixture's theoretical maximum
density (Gmm), which is the benchmark for calculating field compaction percentages.
9. "Segregation" in asphalt paving refers to:
A) The separation of asphalt binder from the aggregate
B) An uneven distribution of coarse and fine aggregate particles in the mat
C) The oxidation of the asphalt surface
D) The formation of cracks along longitudinal joints
ANSWER: B) An uneven distribution of coarse and fine aggregate particles in the mat
EXPLANATION: Segregation appears as areas of predominantly coarse aggregate (with low binder
content and high air voids) next to areas of predominantly fine aggregate. It causes uneven compaction,
permeability, and accelerated raveling and cracking. It can occur during truck loading, hauling, or
placement.
10. The most critical factor for achieving proper density during compaction is:
A) The number of roller passes
B) The mix temperature during compaction
C) The type of roller used
D) The thickness of the lift
ANSWER: B) The mix temperature during compaction
EXPLANATION: While all factors are important, temperature is paramount. Asphalt is a thermoplastic
material; it is most workable and responsive to compaction forces when it is hot. The compaction
window is the time when the mix is between the rolling temperatures specified in the JMF.
11. A "Longitudinal Joint" is formed where:
A) Two paving lanes meet end-to-end
B) Two adjacent paving lanes are placed side-by-side
C) The pavement meets a curb or shoulder
