2024-2025 NEWEST Concrete Batch Plant Operator Exam (FDOT)
COMPLETE QUESTIONS AND ANSWERS 2024-2025| GET IT CORRECT
Stockpiles of aggregate shall be maintained in a well-drained condition in order to: - (answer)Minimize
Free Water Content
Coarse aggregate stockpiles must be sprinkled for at lest how many hours prior to batch for FDOT? -
(answer)24
Free moisture of the aggregate means: - (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? - (answer)Each week
For drill shaft concrete, the quantity of cement replaced with fly ash shall be: - (answer)33 thru 37%
In concrete, which material has a specific gravity of one? - (answer)Water
What is the air content range for all classes of structural concrete except Class IV Shaft? - (answer)1.00
thru 6.00%
, When can unmetered water be added to the concrete? - (answer)Not at all.
Do not allow the total number of revolution at mixing speed to exceed: - (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? - (answer)70 to 100
When the water meters / scales are calibrated, prior to production, at what frequency should they be
checked there after? - (answer)3 moths
To what accuracy should the scales for weighing cement , pozzolan, slag and aggregates at the plant be
maintained - (answer)0.5% of maximum load normally handled
For concrete containing a water-reducing retarding admixture, in an agitator truck, the maximum time
for depositing the concrete shall not exceed: - (answer)90 minutes
If a load of concrete has been rejected due to excessive slump, the concrete may remain in the
transporting vehicle to reduce the slump. - (answer)Is not allowed.
COMPLETE QUESTIONS AND ANSWERS 2024-2025| GET IT CORRECT
Stockpiles of aggregate shall be maintained in a well-drained condition in order to: - (answer)Minimize
Free Water Content
Coarse aggregate stockpiles must be sprinkled for at lest how many hours prior to batch for FDOT? -
(answer)24
Free moisture of the aggregate means: - (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? - (answer)Each week
For drill shaft concrete, the quantity of cement replaced with fly ash shall be: - (answer)33 thru 37%
In concrete, which material has a specific gravity of one? - (answer)Water
What is the air content range for all classes of structural concrete except Class IV Shaft? - (answer)1.00
thru 6.00%
, When can unmetered water be added to the concrete? - (answer)Not at all.
Do not allow the total number of revolution at mixing speed to exceed: - (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? - (answer)70 to 100
When the water meters / scales are calibrated, prior to production, at what frequency should they be
checked there after? - (answer)3 moths
To what accuracy should the scales for weighing cement , pozzolan, slag and aggregates at the plant be
maintained - (answer)0.5% of maximum load normally handled
For concrete containing a water-reducing retarding admixture, in an agitator truck, the maximum time
for depositing the concrete shall not exceed: - (answer)90 minutes
If a load of concrete has been rejected due to excessive slump, the concrete may remain in the
transporting vehicle to reduce the slump. - (answer)Is not allowed.
