FDOT Asphalt Plant Level 1 Exam
Questions With Correct Answers
Proper weight of mix for gyratory compactor - CORRECT ANSWER✔✔-Around
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4500 - 5000g. Determined through the mix design process to achieve the height
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of 115 +/- 5mm
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Required amount of mix for Gmm (rice) samples? - CORRECT ANSWER✔✔-2000-
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2200g total or 1000-1100 grams individually for two flasks
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Required amount of mix for ignition samples? - CORRECT ANSWER✔✔-Depends
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on the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
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Asphalt burns off at what temp - CORRECT ANSWER✔✔-538°C (1000°F)
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The furnace must be capable of what temperature - CORRECT ANSWER✔✔-650°C
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(1200°F)
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Flasks should be calibrated at what temperature and how often? - CORRECT
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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 - CORRECT ANSWER✔✔-1ml wetting
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agent to 1000ml water
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The vacuum applied to flasks for GMM - CORRECT ANSWER✔✔-30 +/- 2mm
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, Vacuum pressure for GMM must be reached within - CORRECT ANSWER✔✔-2
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minutes
The Orbital Shaker must oscillate at - CORRECT ANSWER✔✔-270 +/- 10 rpms
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The vacuum and oscillating test for GMM then continues for how long when it
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reaches target pressure - CORRECT ANSWER✔✔-15 +/- 2minutes
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Gyratory compaction angle is - CORRECT ANSWER✔✔-an internal angle of 1.16
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+/- .02 degrees
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Ram pressure for gyratory compaction is - CORRECT ANSWER✔✔-600 +/- 18 kpA
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perpendicular to the axis | | |
RPM the gyratory compactor operates at - CORRECT ANSWER✔✔-30 +/- .5
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gyrations a minute | |
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and
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for how long - CORRECT ANSWER✔✔-compaction temp +/- 9 for 1 hour +/-
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5minutes and mix should be within +/-20° of compaction temp
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The mold and base plate for the gyratory compactor should be in the oven for
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how long - CORRECT ANSWER✔✔-30 to 60 minutes
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Target specific height for pills - CORRECT ANSWER✔✔-115.0mm +/- 5mm
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Questions With Correct Answers
Proper weight of mix for gyratory compactor - CORRECT 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? - CORRECT ANSWER✔✔-2000-
| | | | | | | | | |
2200g total or 1000-1100 grams individually for two flasks
| | | | | | | |
Required amount of mix for ignition samples? - CORRECT ANSWER✔✔-Depends
| | | | | | | | | |
on the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
| | | | | | | | | | | | | |
Asphalt burns off at what temp - CORRECT ANSWER✔✔-538°C (1000°F)
| | | | | | | | |
The furnace must be capable of what temperature - CORRECT ANSWER✔✔-650°C
| | | | | | | | | |
(1200°F)
|
Flasks should be calibrated at what temperature and how often? - CORRECT
| | | | | | | | | | | |
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 - CORRECT ANSWER✔✔-1ml wetting
| | | | | | | | | | | |
agent to 1000ml water
| | |
The vacuum applied to flasks for GMM - CORRECT ANSWER✔✔-30 +/- 2mm
| | | | | | | | | | |
, Vacuum pressure for GMM must be reached within - CORRECT ANSWER✔✔-2
| | | | | | | | | | |
minutes
The Orbital Shaker must oscillate at - CORRECT ANSWER✔✔-270 +/- 10 rpms
| | | | | | | | | | |
The vacuum and oscillating test for GMM then continues for how long when it
| | | | | | | | | | | | | |
reaches target pressure - CORRECT ANSWER✔✔-15 +/- 2minutes
| | | | | | |
Gyratory compaction angle is - CORRECT ANSWER✔✔-an internal angle of 1.16
| | | | | | | | | | |
+/- .02 degrees
| |
Ram pressure for gyratory compaction is - CORRECT ANSWER✔✔-600 +/- 18 kpA
| | | | | | | | | | | |
perpendicular to the axis | | |
RPM the gyratory compactor operates at - CORRECT ANSWER✔✔-30 +/- .5
| | | | | | | | | | |
gyrations a minute | |
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp and
| | | | | | | | | | | | |
for how long - CORRECT ANSWER✔✔-compaction temp +/- 9 for 1 hour +/-
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5minutes and mix should be within +/-20° of compaction temp
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The mold and base plate for the gyratory compactor should be in the oven for
| | | | | | | | | | | | | | |
how long - CORRECT ANSWER✔✔-30 to 60 minutes
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Target specific height for pills - CORRECT ANSWER✔✔-115.0mm +/- 5mm
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