FDOT Asphalt Plant Level 1 Exam 2025/2026 | Complete Study Guide
& Verified Questions with Correct Answers
Proper weight of mix for gyratory compactor - correct answerAround 4500 - 5000g.
Determined through the mix design process to achieve the height of 115 +/- 5mm
Required amount of mix for Gmm (rice) samples? - correct answer2000-2200g total or
1000-1100 grams individually for two flasks
Required amount of mix for ignition samples? - correct answerDepends on the mix. SP
& FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
Asphalt burns off at what temp - correct answer538°C (1000°F)
The furnace must be capable of what temperature - correct answer650°C (1200°F)
Flasks should be calibrated at what temperature and how often? - correct answer77 +/
2°F of water and once a month or >0.4 grams of dry weight
How many parts of wetting agent to water - correct answer1ml wetting agent to 1000ml
water
The vacuum applied to flasks for GMM - correct answer30 +/- 2mm
Vacuum pressure for GMM must be reached within - correct answer2 minutes
The Orbital Shaker must oscillate at - correct answer270 +/- 10 rpms
The vacuum and oscillating test for GMM then continues for how long when it reaches
target pressure - correct answer15 +/- 2minutes
Gyratory compaction angle is - correct answeran internal angle of 1.16 +/- .02 degrees
Ram pressure for gyratory compaction is - correct answer600 +/- 18 kpA perpendicular
to the axis
RPM the gyratory compactor operates at - correct answer30 +/- .5 gyrations a minute
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and for
how long - correct answercompaction temp +/- 9 for 1 hour +/- 5minutes and mix should
be within +/-20° of compaction temp
, The mold and base plate for the gyratory compactor should be in the oven for how long
- correct answer30 to 60 minutes
Target specific height for pills - correct answer115.0mm +/- 5mm
How do you determine aggregate is dry? - correct answerWeigh the material every 15
minutes when it has lost less than 0.5 grams is it considered dry
Bulk specific gravity (pill) water weight is determined after - correct answer4 +/- 1 minute
When the pill is removed from the water it should be blotted and weighed in what time
and how - correct answer5 seconds with a top and bot flip and then a roll roll
The towel should be damp
Formula for GMB (BSG) - correct answerDry ÷ (SSD - Water Weight)
Round to 3 decimal places
Calculating air voids - correct answer(Gmm - Gmb ÷ Gmm) × 100
For Asphalt Binders PG stands for what? - correct answerPerformance Graded
What do the numbers mean for an asphalt binder? ex: PG 67-22 - correct answer67 is
the average 7 day high temp in Celsius and 22 is the negative low temp in Celsius
ATPB stands for and is used in what? - correct answerAsphalt Treatsd Permeable Base
Used under concrete for drainage
Friction Courses are required on what jobs based on AADT and Design Speed - correct
answerAADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - correct answerPolymer Modified Asphalt
An ARB asphalt binder stands for what? - correct answerAsphalt Rubber Binder
Subgrade requires an LBR of what? - correct answer40
When do you sample tack? - correct answerDuring unloading when it reaches 1/3 of the
load
What do you do first before sampling tack or binder? - correct answerDiscard the first
gallon to clear the line
What is the goal of sampling? - correct answerTo be done so randomly to avoid bias
and creat uniform representative samples
& Verified Questions with Correct Answers
Proper weight of mix for gyratory compactor - correct answerAround 4500 - 5000g.
Determined through the mix design process to achieve the height of 115 +/- 5mm
Required amount of mix for Gmm (rice) samples? - correct answer2000-2200g total or
1000-1100 grams individually for two flasks
Required amount of mix for ignition samples? - correct answerDepends on the mix. SP
& FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
Asphalt burns off at what temp - correct answer538°C (1000°F)
The furnace must be capable of what temperature - correct answer650°C (1200°F)
Flasks should be calibrated at what temperature and how often? - correct answer77 +/
2°F of water and once a month or >0.4 grams of dry weight
How many parts of wetting agent to water - correct answer1ml wetting agent to 1000ml
water
The vacuum applied to flasks for GMM - correct answer30 +/- 2mm
Vacuum pressure for GMM must be reached within - correct answer2 minutes
The Orbital Shaker must oscillate at - correct answer270 +/- 10 rpms
The vacuum and oscillating test for GMM then continues for how long when it reaches
target pressure - correct answer15 +/- 2minutes
Gyratory compaction angle is - correct answeran internal angle of 1.16 +/- .02 degrees
Ram pressure for gyratory compaction is - correct answer600 +/- 18 kpA perpendicular
to the axis
RPM the gyratory compactor operates at - correct answer30 +/- .5 gyrations a minute
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and for
how long - correct answercompaction temp +/- 9 for 1 hour +/- 5minutes and mix should
be within +/-20° of compaction temp
, The mold and base plate for the gyratory compactor should be in the oven for how long
- correct answer30 to 60 minutes
Target specific height for pills - correct answer115.0mm +/- 5mm
How do you determine aggregate is dry? - correct answerWeigh the material every 15
minutes when it has lost less than 0.5 grams is it considered dry
Bulk specific gravity (pill) water weight is determined after - correct answer4 +/- 1 minute
When the pill is removed from the water it should be blotted and weighed in what time
and how - correct answer5 seconds with a top and bot flip and then a roll roll
The towel should be damp
Formula for GMB (BSG) - correct answerDry ÷ (SSD - Water Weight)
Round to 3 decimal places
Calculating air voids - correct answer(Gmm - Gmb ÷ Gmm) × 100
For Asphalt Binders PG stands for what? - correct answerPerformance Graded
What do the numbers mean for an asphalt binder? ex: PG 67-22 - correct answer67 is
the average 7 day high temp in Celsius and 22 is the negative low temp in Celsius
ATPB stands for and is used in what? - correct answerAsphalt Treatsd Permeable Base
Used under concrete for drainage
Friction Courses are required on what jobs based on AADT and Design Speed - correct
answerAADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - correct answerPolymer Modified Asphalt
An ARB asphalt binder stands for what? - correct answerAsphalt Rubber Binder
Subgrade requires an LBR of what? - correct answer40
When do you sample tack? - correct answerDuring unloading when it reaches 1/3 of the
load
What do you do first before sampling tack or binder? - correct answerDiscard the first
gallon to clear the line
What is the goal of sampling? - correct answerTo be done so randomly to avoid bias
and creat uniform representative samples
