©BRIGHSTARS 2024/2025 ALL RIGHTS RESERVED.
WAQTC: Asphalt 2 Exam Questions With
Correct Answers.
What are the two primary ingredients in asphalt mixtures? - Answer✔Aggregate & asphalt
binder
HMA - Answer✔Hot Mix Asphalt
WMA - Answer✔Warm Mix Asphalt
3 Types of Asphalt Mixtures? - Answer✔Dense-graded
Open-graded
Gap-graded
What's included in the total volume of an asphalt mix? - Answer✔Entrapped air voids
Moisture
Effective & absorbed binder
Mineral aggregate
Air Voids (Va) - Answer✔Total volume of small air pockets between coated aggregate
SMA - Answer✔Stone matrix asphalt
Cutback Asphalt - Answer✔Binder that's been modified by blending w/a chemical solvent
Gmm - Answer✔Theoretical maximum specific gravity
Gmb - Answer✔Measured bulk specific gravity
Gsb - Answer✔Oven-dry bulk specific gravity of aggregate
Gsa - Answer✔Apparent specific gravity of aggregate
Gse - Answer✔Effective specific gravity
1|Page
, ©BRIGHSTARS 2024/2025 ALL RIGHTS RESERVED.
Gb - Answer✔Specific gravity of the asphalt binder
Containers used for sampling - Answer✔Cardboard boxes, metal cans, stainless steel bowls, or
other agency approved containers
Specs for sampling plate - Answer✔Thick metal, minimum 8 gauge, wire attached to corner long
enough to reach from the center of the paver to the farthest auger extension. Min one 0.25 in.
hole in the corner of the plate
What is a Mechanical Sampling Device - Answer✔Permanently attached device that allows
sampling receptacle to pass through the entire stream of material or diverts material into the
container by manual, hydraulic, or pneumatic operation
Release agent - Answer✔Non-stick product that prevents mix from sticking to the apparatus (no
solvents or petroleum based products)
How do you determine sample size - Answer✔Depends on test methods specified. Check agency
requirement for size required.
Explain the procedure for attached sampling devices - Answer✔-Coat or pre-heat it
-Pass container through twice, once in each direction perpendicularly w/out overfilling
-Transfer to sample container w/out loss
-Repeat until sample size is obtained
-Combine to form full sample
Explain the procedure for sampling from conveyor belts - Answer✔-avoid the beginning or end
-stop the belt
-place sampling template through the mix on the belt
-remove mix from inside the template, including all fines and place in container
-repeat, obtaining equal sized increments until sample size is obtained
-combine
Explain the procedure for sampling from haul units - Answer✔-visually divide into 4 equal
quadrants
-identify one sampling location
-remove approx. 1 ft from the top to avoid surface segregation
-collect sample
2|Page
WAQTC: Asphalt 2 Exam Questions With
Correct Answers.
What are the two primary ingredients in asphalt mixtures? - Answer✔Aggregate & asphalt
binder
HMA - Answer✔Hot Mix Asphalt
WMA - Answer✔Warm Mix Asphalt
3 Types of Asphalt Mixtures? - Answer✔Dense-graded
Open-graded
Gap-graded
What's included in the total volume of an asphalt mix? - Answer✔Entrapped air voids
Moisture
Effective & absorbed binder
Mineral aggregate
Air Voids (Va) - Answer✔Total volume of small air pockets between coated aggregate
SMA - Answer✔Stone matrix asphalt
Cutback Asphalt - Answer✔Binder that's been modified by blending w/a chemical solvent
Gmm - Answer✔Theoretical maximum specific gravity
Gmb - Answer✔Measured bulk specific gravity
Gsb - Answer✔Oven-dry bulk specific gravity of aggregate
Gsa - Answer✔Apparent specific gravity of aggregate
Gse - Answer✔Effective specific gravity
1|Page
, ©BRIGHSTARS 2024/2025 ALL RIGHTS RESERVED.
Gb - Answer✔Specific gravity of the asphalt binder
Containers used for sampling - Answer✔Cardboard boxes, metal cans, stainless steel bowls, or
other agency approved containers
Specs for sampling plate - Answer✔Thick metal, minimum 8 gauge, wire attached to corner long
enough to reach from the center of the paver to the farthest auger extension. Min one 0.25 in.
hole in the corner of the plate
What is a Mechanical Sampling Device - Answer✔Permanently attached device that allows
sampling receptacle to pass through the entire stream of material or diverts material into the
container by manual, hydraulic, or pneumatic operation
Release agent - Answer✔Non-stick product that prevents mix from sticking to the apparatus (no
solvents or petroleum based products)
How do you determine sample size - Answer✔Depends on test methods specified. Check agency
requirement for size required.
Explain the procedure for attached sampling devices - Answer✔-Coat or pre-heat it
-Pass container through twice, once in each direction perpendicularly w/out overfilling
-Transfer to sample container w/out loss
-Repeat until sample size is obtained
-Combine to form full sample
Explain the procedure for sampling from conveyor belts - Answer✔-avoid the beginning or end
-stop the belt
-place sampling template through the mix on the belt
-remove mix from inside the template, including all fines and place in container
-repeat, obtaining equal sized increments until sample size is obtained
-combine
Explain the procedure for sampling from haul units - Answer✔-visually divide into 4 equal
quadrants
-identify one sampling location
-remove approx. 1 ft from the top to avoid surface segregation
-collect sample
2|Page
