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ACI Certification exam 2024 with 100% correct answers
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The Method of determining air content of concrete containing lightweight aggregate is the pressure method. True or False? Answer - False When making a test cylinder from concrete being used in construction, the field technician must also measure the slump of the concrete. True or False? Answer -...

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  • February 6, 2024
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  • 2023/2024
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ACI Certification exam 2024 with 100%
correct answers

The Method of determining air content of concrete containing lightweight aggregate is the pressure
method. True or False? Answer✔✔ - False



When making a test cylinder from concrete being used in construction, the field technician must also
measure the slump of the concrete. True or False? Answer✔✔ - True



While the technician is checking the slump of the concrete, there is a decided falling away or shearing
off of concrete from one side of the sample. What should the technician do? Answer✔✔ - Disregard the
test and retest on another portion of the sample



Preparation of specimens for transport includes Answer✔✔ - Determining that at least 8 hours has
elapsed since the final set



If the aggregate correction factor for a given source of fine and coarse aggregate is found to be .2% in a
pressure air meter, and an air content value of 5.0% is read on the gage of the same air meter containing
concrete with the same aggregate, what is the correct air content in %. Answer✔✔ - 4.8% = 5.0 - 0.2



Strength test specimens transported from the field to the testing laboratory must be Answer✔✔ -
Protected from jarring, moisture loss, and freezing.



Test for slump and air content must be started within __ after obtaining the final portion of the
composite sample. Answer✔✔ - 5 mins



The minimum size for samples to be used for strength tests is __. Answer✔✔ - 1 ft^3 = 28 L



After strike off of the measure used to determine density, a small quantity of concrete may be added to
correct a deficiency. True or False? Answer✔✔ - False

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