FDOT Asphalt Plant Level 1
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
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
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 +/- 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 Answer-30 to 60 minutes
, Target specific height for pills - Correct Answer-115.0mm +/- 5mm
How do you determine aggregate is dry? - Correct Answer-Weigh 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 Answer-4 +/- 1
minute
When the pill is removed from the water it should be blotted and weighed in what time
and how - Correct Answer-5 seconds with a top and bot flip and then a roll roll
The towel should be damp
Formula for GMB (BSG) - Correct Answer-Dry ÷ (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 Answer-Performance Graded
What do the numbers mean for an asphalt binder? ex: PG 67-22 - Correct Answer-67 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 Answer-Asphalt Treatsd Permeable
Base
Used under concrete for drainage
Friction Courses are required on what jobs based on AADT and Design Speed - Correct
Answer-AADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - Correct Answer-Polymer Modified Asphalt
An ARB asphalt binder stands for what? - Correct Answer-Asphalt Rubber Binder
Subgrade requires an LBR of what? - Correct Answer-40
When do you sample tack? - Correct Answer-During unloading when it reaches 1/3 of
the load
What do you do first before sampling tack or binder? - Correct Answer-Discard the first
gallon to clear the line
What is the goal of sampling? - Correct Answer-To be done so randomly to avoid bias
and creat uniform representative samples
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
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
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 +/- 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 Answer-30 to 60 minutes
, Target specific height for pills - Correct Answer-115.0mm +/- 5mm
How do you determine aggregate is dry? - Correct Answer-Weigh 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 Answer-4 +/- 1
minute
When the pill is removed from the water it should be blotted and weighed in what time
and how - Correct Answer-5 seconds with a top and bot flip and then a roll roll
The towel should be damp
Formula for GMB (BSG) - Correct Answer-Dry ÷ (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 Answer-Performance Graded
What do the numbers mean for an asphalt binder? ex: PG 67-22 - Correct Answer-67 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 Answer-Asphalt Treatsd Permeable
Base
Used under concrete for drainage
Friction Courses are required on what jobs based on AADT and Design Speed - Correct
Answer-AADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - Correct Answer-Polymer Modified Asphalt
An ARB asphalt binder stands for what? - Correct Answer-Asphalt Rubber Binder
Subgrade requires an LBR of what? - Correct Answer-40
When do you sample tack? - Correct Answer-During unloading when it reaches 1/3 of
the load
What do you do first before sampling tack or binder? - Correct Answer-Discard the first
gallon to clear the line
What is the goal of sampling? - Correct Answer-To be done so randomly to avoid bias
and creat uniform representative samples
