ACI CERTIFICATION PRACTICE EXAM QUESTIONS
WITH CORRECT ANSWERS 2025/2026
For 4x8 cylinders, how many layers and rod strokes to properly consolidate the concrete? -
CORRECT ANSWER -2 layers, 25 strokes
For 6x12 cylinders, how many layers and rod strokes to properly consolidate the concrete? -
CORRECT ANSWER -3 layers, 25 rod strokes
After rodding each layer, the sides of the molds should be tapped 10-15 times with a tapping
rod? T/F - CORRECT ANSWER -False
It should be done with a rubber mallet
When rodding the second and/or third layers, the rod must go through the current ;layer and
penetrate the previous layer approximately 1" - CORRECT ANSWER -True
While rodding the top layer and the concrete becomes low, additional concrete must be added
before the 25th stroke - CORRECT ANSWER -True
A tamping rod, flow, or trowel can be used to produce a smooth flat level surface on top of the
cylinders - CORRECT ANSWER -Tamping rod, flow, trowel, all the above
All of the above is correct
When a strength specimen is used for acceptance testing, quality control testing, or trial
batching a mix design, which type of curing method should be used - CORRECT ANSWER -
Standard lab cure
, when a strength specimen is used to determine when a structure can be put in the service or
when shoring can be removed, which type of curing should be used? - CORRECT ANSWER -Field
cure
Which three tests must always be performed when making test specimens? -
CORRECT ANSWER -Temperature, slump, air content
Concrete should cover inches around the temperature sensor? - CORRECT ANSWER -
3
When inserting the sensor into the sample, gently press concrete around the sensor. -
CORRECT ANSWER -True
The temperature reading must be complete between and minutes -
CORRECT ANSWER -2 and 5
Read the temperature measurement to the nearest Fahrenheit - CORRECT ANSWER -
1 degree
The temperature sensor should be removed when reading it? - CORRECT ANSWER -False
The temperature measuring device shall be calibrated or whenever there is a quest
ion of - CORRECT ANSWER --Annually
-Correctness or accuracy
The temperature device should be accurate to the nearest fahrenheit and have a ran
ge of farenhite to _______ fahrenheit. - CORRECT ANSWER -1
30
120
WITH CORRECT ANSWERS 2025/2026
For 4x8 cylinders, how many layers and rod strokes to properly consolidate the concrete? -
CORRECT ANSWER -2 layers, 25 strokes
For 6x12 cylinders, how many layers and rod strokes to properly consolidate the concrete? -
CORRECT ANSWER -3 layers, 25 rod strokes
After rodding each layer, the sides of the molds should be tapped 10-15 times with a tapping
rod? T/F - CORRECT ANSWER -False
It should be done with a rubber mallet
When rodding the second and/or third layers, the rod must go through the current ;layer and
penetrate the previous layer approximately 1" - CORRECT ANSWER -True
While rodding the top layer and the concrete becomes low, additional concrete must be added
before the 25th stroke - CORRECT ANSWER -True
A tamping rod, flow, or trowel can be used to produce a smooth flat level surface on top of the
cylinders - CORRECT ANSWER -Tamping rod, flow, trowel, all the above
All of the above is correct
When a strength specimen is used for acceptance testing, quality control testing, or trial
batching a mix design, which type of curing method should be used - CORRECT ANSWER -
Standard lab cure
, when a strength specimen is used to determine when a structure can be put in the service or
when shoring can be removed, which type of curing should be used? - CORRECT ANSWER -Field
cure
Which three tests must always be performed when making test specimens? -
CORRECT ANSWER -Temperature, slump, air content
Concrete should cover inches around the temperature sensor? - CORRECT ANSWER -
3
When inserting the sensor into the sample, gently press concrete around the sensor. -
CORRECT ANSWER -True
The temperature reading must be complete between and minutes -
CORRECT ANSWER -2 and 5
Read the temperature measurement to the nearest Fahrenheit - CORRECT ANSWER -
1 degree
The temperature sensor should be removed when reading it? - CORRECT ANSWER -False
The temperature measuring device shall be calibrated or whenever there is a quest
ion of - CORRECT ANSWER --Annually
-Correctness or accuracy
The temperature device should be accurate to the nearest fahrenheit and have a ran
ge of farenhite to _______ fahrenheit. - CORRECT ANSWER -1
30
120
