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FDOT Asphalt Plant Level 1 Exam Questions
With Correct Answers.
Proper weight of mix for gyratory compactor - Answer✔Around 4500 - 5000g. Determined
through the mix design process to achieve the height of 115 +/- 5mm
Required amount of mix for Gmm (rice) samples? - Answer✔2000-2200g total or 1000-1100
grams individually for two flasks
Required amount of mix for ignition samples? - Answer✔Depends on the mix. SP & FC 5, 9.5,
12.5 are 1500g. SP 19 is 2000g
Asphalt burns off at what temp - Answer✔538°C (1000°F)
The furnace must be capable of what temperature - Answer✔650°C (1200°F)
Flasks should be calibrated at what temperature and how often? - Answer✔77 +/ 2°F of water
and once a month or >0.4 grams of dry weight
How many parts of wetting agent to water - Answer✔1ml wetting agent to 1000ml water
The vacuum applied to flasks for GMM - Answer✔30 +/- 2mm
Vacuum pressure for GMM must be reached within - Answer✔2 minutes
The Orbital Shaker must oscillate at - Answer✔270 +/- 10 rpms
The vacuum and oscillating test for GMM then continues for how long when it reaches target
pressure - Answer✔15 +/- 2minutes
Gyratory compaction angle is - Answer✔an internal angle of 1.16 +/- .02 degrees
Ram pressure for gyratory compaction is - Answer✔600 +/- 18 kpA perpendicular to the axis
RPM the gyratory compactor operates at - Answer✔30 +/- .5 gyrations a minute
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and for how long -
Answer✔compaction temp +/- 9 for 1 hour +/- 5minutes and mix should be within +/-20° of
compaction temp
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FDOT Asphalt Plant Level 1 Exam Questions
With Correct Answers.
Proper weight of mix for gyratory compactor - Answer✔Around 4500 - 5000g. Determined
through the mix design process to achieve the height of 115 +/- 5mm
Required amount of mix for Gmm (rice) samples? - Answer✔2000-2200g total or 1000-1100
grams individually for two flasks
Required amount of mix for ignition samples? - Answer✔Depends on the mix. SP & FC 5, 9.5,
12.5 are 1500g. SP 19 is 2000g
Asphalt burns off at what temp - Answer✔538°C (1000°F)
The furnace must be capable of what temperature - Answer✔650°C (1200°F)
Flasks should be calibrated at what temperature and how often? - Answer✔77 +/ 2°F of water
and once a month or >0.4 grams of dry weight
How many parts of wetting agent to water - Answer✔1ml wetting agent to 1000ml water
The vacuum applied to flasks for GMM - Answer✔30 +/- 2mm
Vacuum pressure for GMM must be reached within - Answer✔2 minutes
The Orbital Shaker must oscillate at - Answer✔270 +/- 10 rpms
The vacuum and oscillating test for GMM then continues for how long when it reaches target
pressure - Answer✔15 +/- 2minutes
Gyratory compaction angle is - Answer✔an internal angle of 1.16 +/- .02 degrees
Ram pressure for gyratory compaction is - Answer✔600 +/- 18 kpA perpendicular to the axis
RPM the gyratory compactor operates at - Answer✔30 +/- .5 gyrations a minute
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and for how long -
Answer✔compaction temp +/- 9 for 1 hour +/- 5minutes and mix should be within +/-20° of
compaction temp
1|Page
