FDOT Asphalt Plant FINAL EXAM PREP
2025/2026 COMPLETE QUESTIONS BANK
AND CORRECT DETAILED ANSWERS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. What is the purpose of the FDOT CTQP Asphalt Plant course? - ANSWER
✔ To provide knowledge and skills necessary for understanding asphalt
plant operations and quality control.
2. What is the goal of the student taking the FDOT CTQP Asphalt Plant
course? - ANSWER ✔ To pass the test.
3. What does FDOT stand for in the context of the CTQP Asphalt Plant
course? - ANSWER ✔ Florida Department of Transportation.
4. What does CTQP stand for? - ANSWER ✔ Construction Training
Qualification Program.
5. Proper weight of mix for gyratory compactor - ANSWER ✔ Around 4500 -
5000g. Determined through the mix design process to achieve the height of
115 +/- 5mm
6. Required amount of mix for Gmm (rice) samples? - ANSWER ✔ 2000-
2200g total or 1000-1100 grams individually for two flasks
7. Required amount of mix for ignition samples? - ANSWER ✔ Depends on
the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
8. Asphalt burns off at what temp - ANSWER ✔ 538°C (1000°F)
9. The furnace must be capable of what temperature - ANSWER ✔ 650°C
(1200°F)
,10.Flasks should be calibrated at what temperature and how often? - ANSWER
✔ 77 +/ 2°F of water and once a month or >0.4 grams of dry weight
11.How many parts of wetting agent to water - ANSWER ✔ 1ml wetting agent
to 1000ml water
12.The vacuum applied to flasks for GMM - ANSWER ✔ 30 +/- 2mm
13.Vacuum pressure for GMM must be reached within - ANSWER ✔ 2
minutes
14.The Orbital Shaker must oscillate at - ANSWER ✔ 270 +/- 10 rpms
15.The vacuum and oscillating test for GMM then continues for how long when
it reaches target pressure - ANSWER ✔ 15 +/- 2minutes
16.Gyratory compaction angle is - ANSWER ✔ an internal angle of 1.16 +/-
.02 degrees
17.Ram pressure for gyratory compaction is - ANSWER ✔ 600 +/- 18 kpA
perpendicular to the axis
18.RPM the gyratory compactor operates at - ANSWER ✔ 30 +/- .5 gyrations a
minute
19.When the Orbital Shaker time is up and pressure is released for the GMM
how long do the samples sit? - ANSWER ✔ 10 +/- 1 minute
20.When do you fill the flasks for the GMM with water? - ANSWER ✔ Before
the 9 minute mark while sitting
21.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
22.What temperature of water is used throughout the GMM and GMB testing? -
ANSWER ✔ 77 +/- 2°F
,23.The dry back procedure is used in what circumstance for the GMM -
ANSWER ✔ For mix designs to determine the GMM correction factor
24.When is the GMM dry back considered dry - ANSWER ✔ Weighed every
15 minutes and when the weight loss is less than 0.5 grams
25.Formula for GMM (MSG) - ANSWER ✔ Dry Sample ÷ (SSD or Dry
weight + Flask & Water - Flask & Water & Sample)
26.Roadway Density Cores Formula - ANSWER ✔ (GMB ÷ GMM) × 100
27.If reheating the ignition sample is needed it is done at what temp? -
ANSWER ✔ 300°F +/- 9°F
28.Determining Mix Design Calibration Factor Formula - ANSWER ✔ Known
AC - (WL1 + WL2) ÷ 2
29.Determining 8 Sieve Correction Factor - ANSWER ✔ P-8[Solvent] - P-
8[Ignition]
30.Determining 200 Sieve Correction Factor - ANSWER ✔ P-200[Solvent] - P-
200[Ignition]
31.Calibrated AC Formula - ANSWER ✔ AC Measured + Correction Factor
32.Single operator for gmb - ANSWER ✔ 0.011
33.multi lab gmb - ANSWER ✔ 0.022
34.Roadway cores are considered multi-lab and the tolerance is - ANSWER ✔
0.015
35.Single operator for GMM - ANSWER ✔ 0.013
36.multi lab for gmm - ANSWER ✔ 0.016
, 37.Plant produced single operator for ignition - ANSWER ✔ 0.32
38.Plant produced multi lab for ignition - ANSWER ✔ 0.44
39.lab created single operator for ignition - ANSWER ✔ 0.13
40.lab created multi lab for ignition - ANSWER ✔ 0.35
41.What is a single operator? - ANSWER ✔ Single Operator has to be the same
lab and same job designation.
Ex: Two different QC personnel in the same lab
Ex: The same QC person in the same lab
42.two types of plants - ANSWER ✔ batch plant
drum plant
43.Drum plant - ANSWER ✔ has a higher production rate
44.batch plant - ANSWER ✔ one batch created at a time
45.Common Asphalt plant operations - ANSWER ✔ •Aggregate storage and
feeding
•Weighing and handling
•Mix production
•Mix storage
•Dust control and collection
46.What is the current practice to keep RAP/RAS under? - ANSWER ✔ RAP -
below 30%
RAS - below 5%
this is the percent of old asphalt that is added into new asphalt
47.With HMA paving operations colder ambient temperatures means less time
for? - ANSWER ✔ transport
placement
compaction
48.why old asphalt milling? - ANSWER ✔ to recylce
2025/2026 COMPLETE QUESTIONS BANK
AND CORRECT DETAILED ANSWERS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. What is the purpose of the FDOT CTQP Asphalt Plant course? - ANSWER
✔ To provide knowledge and skills necessary for understanding asphalt
plant operations and quality control.
2. What is the goal of the student taking the FDOT CTQP Asphalt Plant
course? - ANSWER ✔ To pass the test.
3. What does FDOT stand for in the context of the CTQP Asphalt Plant
course? - ANSWER ✔ Florida Department of Transportation.
4. What does CTQP stand for? - ANSWER ✔ Construction Training
Qualification Program.
5. Proper weight of mix for gyratory compactor - ANSWER ✔ Around 4500 -
5000g. Determined through the mix design process to achieve the height of
115 +/- 5mm
6. Required amount of mix for Gmm (rice) samples? - ANSWER ✔ 2000-
2200g total or 1000-1100 grams individually for two flasks
7. Required amount of mix for ignition samples? - ANSWER ✔ Depends on
the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g
8. Asphalt burns off at what temp - ANSWER ✔ 538°C (1000°F)
9. The furnace must be capable of what temperature - ANSWER ✔ 650°C
(1200°F)
,10.Flasks should be calibrated at what temperature and how often? - ANSWER
✔ 77 +/ 2°F of water and once a month or >0.4 grams of dry weight
11.How many parts of wetting agent to water - ANSWER ✔ 1ml wetting agent
to 1000ml water
12.The vacuum applied to flasks for GMM - ANSWER ✔ 30 +/- 2mm
13.Vacuum pressure for GMM must be reached within - ANSWER ✔ 2
minutes
14.The Orbital Shaker must oscillate at - ANSWER ✔ 270 +/- 10 rpms
15.The vacuum and oscillating test for GMM then continues for how long when
it reaches target pressure - ANSWER ✔ 15 +/- 2minutes
16.Gyratory compaction angle is - ANSWER ✔ an internal angle of 1.16 +/-
.02 degrees
17.Ram pressure for gyratory compaction is - ANSWER ✔ 600 +/- 18 kpA
perpendicular to the axis
18.RPM the gyratory compactor operates at - ANSWER ✔ 30 +/- .5 gyrations a
minute
19.When the Orbital Shaker time is up and pressure is released for the GMM
how long do the samples sit? - ANSWER ✔ 10 +/- 1 minute
20.When do you fill the flasks for the GMM with water? - ANSWER ✔ Before
the 9 minute mark while sitting
21.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
22.What temperature of water is used throughout the GMM and GMB testing? -
ANSWER ✔ 77 +/- 2°F
,23.The dry back procedure is used in what circumstance for the GMM -
ANSWER ✔ For mix designs to determine the GMM correction factor
24.When is the GMM dry back considered dry - ANSWER ✔ Weighed every
15 minutes and when the weight loss is less than 0.5 grams
25.Formula for GMM (MSG) - ANSWER ✔ Dry Sample ÷ (SSD or Dry
weight + Flask & Water - Flask & Water & Sample)
26.Roadway Density Cores Formula - ANSWER ✔ (GMB ÷ GMM) × 100
27.If reheating the ignition sample is needed it is done at what temp? -
ANSWER ✔ 300°F +/- 9°F
28.Determining Mix Design Calibration Factor Formula - ANSWER ✔ Known
AC - (WL1 + WL2) ÷ 2
29.Determining 8 Sieve Correction Factor - ANSWER ✔ P-8[Solvent] - P-
8[Ignition]
30.Determining 200 Sieve Correction Factor - ANSWER ✔ P-200[Solvent] - P-
200[Ignition]
31.Calibrated AC Formula - ANSWER ✔ AC Measured + Correction Factor
32.Single operator for gmb - ANSWER ✔ 0.011
33.multi lab gmb - ANSWER ✔ 0.022
34.Roadway cores are considered multi-lab and the tolerance is - ANSWER ✔
0.015
35.Single operator for GMM - ANSWER ✔ 0.013
36.multi lab for gmm - ANSWER ✔ 0.016
, 37.Plant produced single operator for ignition - ANSWER ✔ 0.32
38.Plant produced multi lab for ignition - ANSWER ✔ 0.44
39.lab created single operator for ignition - ANSWER ✔ 0.13
40.lab created multi lab for ignition - ANSWER ✔ 0.35
41.What is a single operator? - ANSWER ✔ Single Operator has to be the same
lab and same job designation.
Ex: Two different QC personnel in the same lab
Ex: The same QC person in the same lab
42.two types of plants - ANSWER ✔ batch plant
drum plant
43.Drum plant - ANSWER ✔ has a higher production rate
44.batch plant - ANSWER ✔ one batch created at a time
45.Common Asphalt plant operations - ANSWER ✔ •Aggregate storage and
feeding
•Weighing and handling
•Mix production
•Mix storage
•Dust control and collection
46.What is the current practice to keep RAP/RAS under? - ANSWER ✔ RAP -
below 30%
RAS - below 5%
this is the percent of old asphalt that is added into new asphalt
47.With HMA paving operations colder ambient temperatures means less time
for? - ANSWER ✔ transport
placement
compaction
48.why old asphalt milling? - ANSWER ✔ to recylce
