CONCRETE BATCH PLANT OPERATOR
EXAM (FDOT) | QUESTIONS &
ANSWERS (VERIFIED) | LATEST
UPDATE | GRADED A+
Stockpiles of aggregate shall be maintained in a well-drained condition in order to:
Correct Answer: Minimize Free Water Content
Coarse aggregate stockpiles must be sprinkled for at lest how many hours prior to batch
for FDOT?
Correct Answer: 24
Free moisture of the aggregate means:
Correct Answer: Moister on the surface of an aggregate that is above and beyond
the absorbed moister in the aggregate.
If the moister test is done other than by the cook-out method, how often shall the other
methods be verified?
Correct Answer: Each week
1
, For drill shaft concrete, the quantity of cement replaced with fly ash shall be:
Correct Answer: 33 thru 37%
In concrete, which material has a specific gravity of one?
Correct Answer: Water
What is the air content range for all classes of structural concrete except Class IV
Shaft?
Correct Answer: 1.00 thru 6.00%
When can unmetered water be added to the concrete?
Correct Answer: Not at all.
Do not allow the total number of revolution at mixing speed to exceed:
Correct Answer: 160 Revolutions
After all materials have been charged into the transit mixer drum, the concrete must be
mixed at how many revolutions at the plant before leaving for the project?
Correct Answer: 70 to 100
When the water meters / scales are calibrated, prior to production, at what frequency
should they be checked there after?
Correct Answer: 3 moths
2
EXAM (FDOT) | QUESTIONS &
ANSWERS (VERIFIED) | LATEST
UPDATE | GRADED A+
Stockpiles of aggregate shall be maintained in a well-drained condition in order to:
Correct Answer: Minimize Free Water Content
Coarse aggregate stockpiles must be sprinkled for at lest how many hours prior to batch
for FDOT?
Correct Answer: 24
Free moisture of the aggregate means:
Correct Answer: Moister on the surface of an aggregate that is above and beyond
the absorbed moister in the aggregate.
If the moister test is done other than by the cook-out method, how often shall the other
methods be verified?
Correct Answer: Each week
1
, For drill shaft concrete, the quantity of cement replaced with fly ash shall be:
Correct Answer: 33 thru 37%
In concrete, which material has a specific gravity of one?
Correct Answer: Water
What is the air content range for all classes of structural concrete except Class IV
Shaft?
Correct Answer: 1.00 thru 6.00%
When can unmetered water be added to the concrete?
Correct Answer: Not at all.
Do not allow the total number of revolution at mixing speed to exceed:
Correct Answer: 160 Revolutions
After all materials have been charged into the transit mixer drum, the concrete must be
mixed at how many revolutions at the plant before leaving for the project?
Correct Answer: 70 to 100
When the water meters / scales are calibrated, prior to production, at what frequency
should they be checked there after?
Correct Answer: 3 moths
2
