FDOT Asphalt Plant Level 1 Exam
Questions and Answers
Friction Courses are required on what jobs based on AADT and Design Speed -
Answer-AADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - Answer-Polymer Modified Asphalt
An ARB asphalt binder stands for what? - Answer-Asphalt Rubber Binder
Subgrade requires an LBR of what? - Answer-40
When do you sample tack? - Answer-During unloading when it reaches 1/3 of the load
What do you do first before sampling tack or binder? - Answer-Discard the first gallon to
clear the line
What is the goal of sampling? - Answer-To be done so randomly to avoid bias and creat
uniform representative samples
Lots are what size? - Answer-2000 or 4000 tn
FC5 can only use what lot size? - Answer-2000 tn
Sample sizes should weigh how much - Answer-35 lbs
Sample box sizes should be what dimensions? - Answer-12"x8"x4"
How do you sample an asphalt truck? - Answer-In 3 different areas at least 12" down
What type of paper do you use for FC5? - Answer-Silicone coated non stick paper (no
wax)
Where should the hole be located for temping asphalt trucks? - Answer-On both sides
6-10" higher than the bottom of the bed in the middle third of the truck
, What is the master range for truck temperatures for both the plant and roadway? -
Answer-+/- 30°
This is also the temp you base rejections off of
What is the criteria for temping asphalt trucks? - Answer-Any single trucks should be +/-
25°
Average of 5 trucks should be +/-15°
Gyratory Specimens should be cooled to what temperature? - Answer-77 +/-9°F
What is the process for drying cores? - Answer-In the core dryer. Weighing each time
until the weight lost is less than 0.5 grams
When cooled the GMM samples should be no bigger than? - Answer-1/4"
(Stones that are bigger than 1/4" are excluded)
When the Orbital Shaker time is up and pressure is released for the GMM how long do
the samples sit? - Answer-10 +/- 1 minute
When do you fill the flasks for the GMM with water? - Answer-Before the 9 minute mark
while sitting
What do the numbers mean for an asphalt binder? ex: PG 67-22 - 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? - Answer-Asphalt Treatsd Permeable Base
Used under concrete for drainage
When do you cap the flasks for the GMM samples and weigh them? - Answer-After 9
minutes has been reached on the timer and not to exceed 11 minutes
What temperature of water is used throughout the GMM and GMB testing? - Answer-77
+/- 2°F
The dry back procedure is used in what circumstance for the GMM - Answer-For mix
designs to determine the GMM correction factor
When is the GMM dry back considered dry - Answer-Weighed every 15 minutes and
when the weight loss is less than 0.5 grams
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
Questions and Answers
Friction Courses are required on what jobs based on AADT and Design Speed -
Answer-AADT > 3000
Design Speed > 35 mph
A PMA asphalt binder stands for what? - Answer-Polymer Modified Asphalt
An ARB asphalt binder stands for what? - Answer-Asphalt Rubber Binder
Subgrade requires an LBR of what? - Answer-40
When do you sample tack? - Answer-During unloading when it reaches 1/3 of the load
What do you do first before sampling tack or binder? - Answer-Discard the first gallon to
clear the line
What is the goal of sampling? - Answer-To be done so randomly to avoid bias and creat
uniform representative samples
Lots are what size? - Answer-2000 or 4000 tn
FC5 can only use what lot size? - Answer-2000 tn
Sample sizes should weigh how much - Answer-35 lbs
Sample box sizes should be what dimensions? - Answer-12"x8"x4"
How do you sample an asphalt truck? - Answer-In 3 different areas at least 12" down
What type of paper do you use for FC5? - Answer-Silicone coated non stick paper (no
wax)
Where should the hole be located for temping asphalt trucks? - Answer-On both sides
6-10" higher than the bottom of the bed in the middle third of the truck
, What is the master range for truck temperatures for both the plant and roadway? -
Answer-+/- 30°
This is also the temp you base rejections off of
What is the criteria for temping asphalt trucks? - Answer-Any single trucks should be +/-
25°
Average of 5 trucks should be +/-15°
Gyratory Specimens should be cooled to what temperature? - Answer-77 +/-9°F
What is the process for drying cores? - Answer-In the core dryer. Weighing each time
until the weight lost is less than 0.5 grams
When cooled the GMM samples should be no bigger than? - Answer-1/4"
(Stones that are bigger than 1/4" are excluded)
When the Orbital Shaker time is up and pressure is released for the GMM how long do
the samples sit? - Answer-10 +/- 1 minute
When do you fill the flasks for the GMM with water? - Answer-Before the 9 minute mark
while sitting
What do the numbers mean for an asphalt binder? ex: PG 67-22 - 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? - Answer-Asphalt Treatsd Permeable Base
Used under concrete for drainage
When do you cap the flasks for the GMM samples and weigh them? - Answer-After 9
minutes has been reached on the timer and not to exceed 11 minutes
What temperature of water is used throughout the GMM and GMB testing? - Answer-77
+/- 2°F
The dry back procedure is used in what circumstance for the GMM - Answer-For mix
designs to determine the GMM correction factor
When is the GMM dry back considered dry - Answer-Weighed every 15 minutes and
when the weight loss is less than 0.5 grams
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
