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ACI CERTIFICATION PRACTICE EXAM
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ACI CERTIFICATION PRACTICE EXAM
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ACI CERTIFICATION PRACTICE EXAMFor 4x8 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - Answers -2 layers, 25 strokes
For 6x12 cylinders, how many layers and rod strokes to properly consolidate the
concrete? - Answers -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 - Answers -False
It should be done with a rubber mallet
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? -
Answers -Field cure
Which three tests must always be performed when making test specimens? - Answers -
Temperature, slump, air content
Concrete should cover________ inches around the temperature sensor? - Answers -3
When inserting the sensor into the sample, gently press concrete around the sensor. -
Answers -True
The temperature reading must be complete between _______ and ______ minutes -
Answers -2 and 5
Read the temperature measurement to the nearest ______ Fahrenheit - Answers -1
degree
The temperature sensor should be removed when reading it? - Answers -False
The temperature measuring device shall be calibrated _________or whenever there is
a question of_____________ - Answers --Annually
-Correctness or accuracy
The temperature device should be accurate to the nearest_______ fahrenheit and have
a range of _____farenhite to _______ fahrenheit. - Answers -1
30
120
The maximum allowable sampling time between attaining the first and final portions of a
composite sample is ____________ - Answers -15 minutes
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