ACI Certification Practice Exam
Questions and Answers 100% Pass
For 4x8 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - ANSWER✔✔-2 layers, 25 strokes
For 6x12 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - 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 - 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" - ANSWER✔✔-True
While rodding the top layer and the concrete becomes low, additional concrete must be
added before the 25th stroke - ANSWER✔✔-True
A tamping rod, flow, or trowel can be used to produce a smooth flat level surface on
top of the cylinders - ANSWER✔✔-Tamping rod, flow, trowel, all the above
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, 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 - 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? -
ANSWER✔✔-Field cure
Which three tests must always be performed when making test specimens? -
ANSWER✔✔-Temperature, slump, air content
Concrete should cover________ inches around the temperature sensor? - ANSWER✔✔-
3
When inserting the sensor into the sample, gently press concrete around the sensor. -
ANSWER✔✔-True
The temperature reading must be complete between _______ and ______ minutes -
ANSWER✔✔-2 and 5
Read the temperature measurement to the nearest ______ Fahrenheit - ANSWER✔✔-1
degree
The temperature sensor should be removed when reading it? - ANSWER✔✔-False
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Questions and Answers 100% Pass
For 4x8 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - ANSWER✔✔-2 layers, 25 strokes
For 6x12 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - 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 - 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" - ANSWER✔✔-True
While rodding the top layer and the concrete becomes low, additional concrete must be
added before the 25th stroke - ANSWER✔✔-True
A tamping rod, flow, or trowel can be used to produce a smooth flat level surface on
top of the cylinders - ANSWER✔✔-Tamping rod, flow, trowel, all the above
Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 1/6
, 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 - 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? -
ANSWER✔✔-Field cure
Which three tests must always be performed when making test specimens? -
ANSWER✔✔-Temperature, slump, air content
Concrete should cover________ inches around the temperature sensor? - ANSWER✔✔-
3
When inserting the sensor into the sample, gently press concrete around the sensor. -
ANSWER✔✔-True
The temperature reading must be complete between _______ and ______ minutes -
ANSWER✔✔-2 and 5
Read the temperature measurement to the nearest ______ Fahrenheit - ANSWER✔✔-1
degree
The temperature sensor should be removed when reading it? - ANSWER✔✔-False
Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 2/6
