CONCRETE BATCH PLANT OPERATOR
EXAM (2024-2025) | QUESTIONS WITH
ANSWERS
Plant personnel must check the mixer for which of the 5
items? - <<,Answers>>>1. Truck Drum Condition
2. Water Gauge
3. Manufacturer's Rating Plate
4. Mixer Blade Wear
5. Revolution Counter.
What is re-tempered concrete? - <<,Answers>>>Concrete that
has water added after it initially starts to set
An accumulation of hardened concrete in a mixer drum may
cause: - <<,Answers>>>Inadequate mixing
Who must demonstrate thru examination, adequate concrete
related knowledge and sign concrete delivery tickets? -
<<,Answers>>>Concrete Batch Plant Operator
A design mix indicates that the amount of coarse aggregate to
be used is 1,056 lbs/yd3 using pit #87-020 with a specific
gravity of 2.46 and the specific gravity changes to 2.49. How
, much coarse aggregate should be used to maintain the same
volume? - <<,Answers>>>1,069 lbs/yd3
If the batch weight equals 3,810 and the yield is 27 ft3 what is
the unit weight? - <<,Answers>>>141.1 lbs/ft3
What is the water-cementitious ration (w/cm) of a concrete
mix that contains 550 lbs/yd3 of cement, 120 lbs/yd3 of fly
ash and 35 gal/yd3 of water? - <<,Answers>>>0.44
A batch of sand is 1,310 lbs. If a 1,050 gram sample from the
batch weighs 966.4 grams when oven dried, weights do not
include the pan. How many pounds of dry sand are there? -
<<,Answers>>>1206
What type of of cement is used in for all mass concrete
elements? - <<,Answers>>>Type II (MH)
What does the acronym OPC mean? -
<<,Answers>>>Ordinary Portland Cement
What is Type I Cement? - <<,Answers>>>General use -
everyday cement
What is type II Cement? - <<,Answers>>>Moderate soleplate
resistance cement
EXAM (2024-2025) | QUESTIONS WITH
ANSWERS
Plant personnel must check the mixer for which of the 5
items? - <<,Answers>>>1. Truck Drum Condition
2. Water Gauge
3. Manufacturer's Rating Plate
4. Mixer Blade Wear
5. Revolution Counter.
What is re-tempered concrete? - <<,Answers>>>Concrete that
has water added after it initially starts to set
An accumulation of hardened concrete in a mixer drum may
cause: - <<,Answers>>>Inadequate mixing
Who must demonstrate thru examination, adequate concrete
related knowledge and sign concrete delivery tickets? -
<<,Answers>>>Concrete Batch Plant Operator
A design mix indicates that the amount of coarse aggregate to
be used is 1,056 lbs/yd3 using pit #87-020 with a specific
gravity of 2.46 and the specific gravity changes to 2.49. How
, much coarse aggregate should be used to maintain the same
volume? - <<,Answers>>>1,069 lbs/yd3
If the batch weight equals 3,810 and the yield is 27 ft3 what is
the unit weight? - <<,Answers>>>141.1 lbs/ft3
What is the water-cementitious ration (w/cm) of a concrete
mix that contains 550 lbs/yd3 of cement, 120 lbs/yd3 of fly
ash and 35 gal/yd3 of water? - <<,Answers>>>0.44
A batch of sand is 1,310 lbs. If a 1,050 gram sample from the
batch weighs 966.4 grams when oven dried, weights do not
include the pan. How many pounds of dry sand are there? -
<<,Answers>>>1206
What type of of cement is used in for all mass concrete
elements? - <<,Answers>>>Type II (MH)
What does the acronym OPC mean? -
<<,Answers>>>Ordinary Portland Cement
What is Type I Cement? - <<,Answers>>>General use -
everyday cement
What is type II Cement? - <<,Answers>>>Moderate soleplate
resistance cement
