FDOT ASPHALT PLANT LEVEL 1
EXAM (LATEST UPDATE 2024-
2025)GRADED A+
Proper weight of mix for gyratory compactor
Around 4500 - 5000g. Determined through the mix design process to achieve
the height of 115 +/- 5mm ÖÖ
Required amount of mix for Gmm (rice) samples?
2000-2200g total or 1000-1100 grams individually for two flasksÖÖ
Required amount of mix for ignition samples?
Depends on the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000gÖÖ
Asphalt burns off at what temp
538°C (1000°F) ÖÖ
The furnace must be capable of what temperature
650°C (1200°F) ÖÖ
Flasks should be calibrated at what temperature and how often?
77 +/ 2°F of water and once a month or >0.4 grams of dry weightÖÖ
How many parts of wetting agent to water
1ml wetting agent to 1000ml waterÖÖ
The vacuum applied to flasks for GMM
, 30 +/- 2mmÖÖ
Vacuum pressure for GMM must be reached within
2 minutesÖÖ
The Orbital Shaker must oscillate at
270 +/- 10 rpmsÖÖ
The vacuum and oscillating test for GMM then continues for how long when it
reaches target pressure
15 +/- 2minutesÖÖ
Gyratory compaction angle is
An internal angle of 1.16 +/- .02 degreesÖÖ
Ram pressure for gyratory compaction is
600 +/- 18 kpa perpendicular to the axisÖÖ
RPM the gyratory compactor operates at
30 +/- .5 gyrations a minuteÖÖ
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp
and for how long
Compaction temp +/- 9 for 1 hour +/- 5minutes and mix should be within +/-20°
of compaction tempÖÖ
The mold and base plate for the gyratory compactor should be in the oven for
how long
EXAM (LATEST UPDATE 2024-
2025)GRADED A+
Proper weight of mix for gyratory compactor
Around 4500 - 5000g. Determined through the mix design process to achieve
the height of 115 +/- 5mm ÖÖ
Required amount of mix for Gmm (rice) samples?
2000-2200g total or 1000-1100 grams individually for two flasksÖÖ
Required amount of mix for ignition samples?
Depends on the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000gÖÖ
Asphalt burns off at what temp
538°C (1000°F) ÖÖ
The furnace must be capable of what temperature
650°C (1200°F) ÖÖ
Flasks should be calibrated at what temperature and how often?
77 +/ 2°F of water and once a month or >0.4 grams of dry weightÖÖ
How many parts of wetting agent to water
1ml wetting agent to 1000ml waterÖÖ
The vacuum applied to flasks for GMM
, 30 +/- 2mmÖÖ
Vacuum pressure for GMM must be reached within
2 minutesÖÖ
The Orbital Shaker must oscillate at
270 +/- 10 rpmsÖÖ
The vacuum and oscillating test for GMM then continues for how long when it
reaches target pressure
15 +/- 2minutesÖÖ
Gyratory compaction angle is
An internal angle of 1.16 +/- .02 degreesÖÖ
Ram pressure for gyratory compaction is
600 +/- 18 kpa perpendicular to the axisÖÖ
RPM the gyratory compactor operates at
30 +/- .5 gyrations a minuteÖÖ
Gyratory (GMB) and Rice (GMM) samples must be conditioned at what temp
and for how long
Compaction temp +/- 9 for 1 hour +/- 5minutes and mix should be within +/-20°
of compaction tempÖÖ
The mold and base plate for the gyratory compactor should be in the oven for
how long
