FDOT BATCH PLANT OPERATOR'S QUIZ
Absolute volume of a material is: - answer -volume of a material in a voidless state
The three methods which may be used to determine free moisture are: - answer -
cookout, towel dry, and probe
Plant personnel must inspect mixer trucks for what 5 items? - answer -counter, water,
rating plate, drum, and blades
The six types of cement allowed in fdot concrete mixes are? - answer -1, 2, 3, 1-p, 1-s,
1-p(ms)
Hot weather concrete's maximum temperature is: - answer -100 degrees f
Concrete quality control records are required to be: - answer -at each certified dot plant
and maintained for 3 years
Aggregate gradations are: - answer -required once per month per material
How many mixing revolutions are required at the plant? - answer -70-100
Water-cement ratio (w/c ratio) is? - answer -water divided by cement, fly ash, and slag
What is the unit weight of water? - answer -62.4 pounds
The minumum number of step checks required by scales is? - answer -at least 4
Why should care be exercised when handling aggregates? - answer -to prevent
segregation, degredation, and contamination
Excessive build up of hardened concrete in a mixer drum causes: - answer -inadequate
mixing
Aggregate from source a has a specific gravity of 2.63, while source b has a sg of 2.48.
Which source weighs the most per cubic foot of concrete? - answer -source a
Course aggregate stock piles must be sprinkled with water for at least
________________hours prior to batching fdot concrete? - answer -24 hours
Agitating speed of a truck mixer is: - answer -2 - 6 rpm
When 2 portland cements are ground differently, one finer than the other, the finer one
will: - answer -generate more heat, set more quickly, and give generally higher early
strength.
Absolute volume of a material is: - answer -volume of a material in a voidless state
The three methods which may be used to determine free moisture are: - answer -
cookout, towel dry, and probe
Plant personnel must inspect mixer trucks for what 5 items? - answer -counter, water,
rating plate, drum, and blades
The six types of cement allowed in fdot concrete mixes are? - answer -1, 2, 3, 1-p, 1-s,
1-p(ms)
Hot weather concrete's maximum temperature is: - answer -100 degrees f
Concrete quality control records are required to be: - answer -at each certified dot plant
and maintained for 3 years
Aggregate gradations are: - answer -required once per month per material
How many mixing revolutions are required at the plant? - answer -70-100
Water-cement ratio (w/c ratio) is? - answer -water divided by cement, fly ash, and slag
What is the unit weight of water? - answer -62.4 pounds
The minumum number of step checks required by scales is? - answer -at least 4
Why should care be exercised when handling aggregates? - answer -to prevent
segregation, degredation, and contamination
Excessive build up of hardened concrete in a mixer drum causes: - answer -inadequate
mixing
Aggregate from source a has a specific gravity of 2.63, while source b has a sg of 2.48.
Which source weighs the most per cubic foot of concrete? - answer -source a
Course aggregate stock piles must be sprinkled with water for at least
________________hours prior to batching fdot concrete? - answer -24 hours
Agitating speed of a truck mixer is: - answer -2 - 6 rpm
When 2 portland cements are ground differently, one finer than the other, the finer one
will: - answer -generate more heat, set more quickly, and give generally higher early
strength.
