Concrete Batch Plant Operator Exam (FDOT) Questions And Answers | Updated Solutions | 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 cookout 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 8/8/25, 8:39 AM Concrete Batch Plant Operator Exam (FDOT) Flashcards | Quizlet 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 100 When the water meters / scales are calibrated, prior to production, at what frequency should they be checked there after? 3 moths To what accuracy should the scales for weighing cement , pozzolan, slag and aggregates at the plant be maintained 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: 90 minutes 8/8/25, 8:39 AM Concrete Batch Plant Operator Exam (FDOT) Flashcards | Quizlet been rejected due to excessive slump, the concrete may remain in the transporting vehicle to reduce the slump. Is not allowed. Who places the orders for concrete with the producer? The contractor The minimum normal sampling frequency for the chloride content of structural concrete is: 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? SSD condition The specific gravity of an aggregate is the ratio of its unit weight to the weight of an equal absolute volume of: Water What is the weight of a bag of Portland cement in the USA? 94 lbs What is the maximum concrete temperature allowed when using a hot weather design mix? 100 degrees F Who is responsible for signing the FDOT delivery ticket at the concrete plant? The FDOT qualified batch plant operator 8/8/25, 8:39 AM Concrete Batch Plant Operator Exam (FDOT) Flashcards | Quizlet revolutions at mixing speed, at the plant will be recorded on the delivery ticket: Before leaving for the jobsite When filling out the information for aggregates on the delivery ticket, which of the following is NOT required? The target weight of the aggregate batch