Concrete Batch Plant Operator Exam (FDOT) Exam Questions With 100% Correct Answers.

Stockpiles of aggregate shall be maintained in a well-drained condition in order to: - Minimize Free Water Content Coarse aggregate stockpiles must be sprinkled for at lest how many hours prior to batch for FDOT? - 24 Free moisture of the aggregate means: - 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? - Each week For drill shaft concrete, the quantity of cement replaced with fly ash shall be: - 33 thru 37% In concrete, which material has a specific gravity of one? - Water What is the air content range for all classes of structural concrete except Class IV Shaft? - 1.00 thru 6.00% When can unmetered water be added to the concrete? - Not at all. Do not allow the total number of revolution at mixing speed to exceed: - 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? - 70 to 100When the water meters / scales are calibrated, prior to production, at what frequency should they be checked there after? - 3 moths