BRAINSCAPE1
FDOT Asphalt Plant Level 1 Exam with
complete solutions latest version
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
BRAINSCAPE1
, BRAINSCAPE1
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
BRAINSCAPE1
FDOT Asphalt Plant Level 1 Exam with
complete solutions latest version
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
BRAINSCAPE1
, BRAINSCAPE1
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
BRAINSCAPE1
