©BRIGHTSTARS 2025 ALL RIGHTS RESERVED 9:46 AM A+
Concrete Batch Plant Operator Exam
(FDOT) Questions And Answers |Latest 2025
| Guaranteed Pass
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%
1
, ©BRIGHTSTARS 2025 ALL RIGHTS RESERVED 9:46 AM A+
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.
Who places the orders for concrete with the producer? - Answer✔The contractor
The minimum normal sampling frequency for the chloride content of structural concrete is: -
Answer✔1 per design mix in use from the first day of production and every 30 calendar days or
less thereafter.
In what moister condition are the aggregates on the approved concrete mix designs? -
Answer✔SSD condition
2
Concrete Batch Plant Operator Exam
(FDOT) Questions And Answers |Latest 2025
| Guaranteed Pass
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%
1
, ©BRIGHTSTARS 2025 ALL RIGHTS RESERVED 9:46 AM A+
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.
Who places the orders for concrete with the producer? - Answer✔The contractor
The minimum normal sampling frequency for the chloride content of structural concrete is: -
Answer✔1 per design mix in use from the first day of production and every 30 calendar days or
less thereafter.
In what moister condition are the aggregates on the approved concrete mix designs? -
Answer✔SSD condition
2
