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ACI Certification: Sample Written Exam Questions With Complete Solutions (verified answers)
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ACI Certification: Sample Written Exam Questions With Complete Solutions (verified answers)
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ACI Certification: Sample Written ExamQuestions With Complete Solutions (verified
answers)
False CORRECT ANSWERS The method of determining air content containing lightweight aggregate is the pressure method. True or False?
True CORRECT ANSWERS 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?
Disregard the test and retest on another portion of the sample. CORRECT ANSWERS While the technician is checking the slump of the concrete, there is a decided falling away or shearing off of the concrete from one side of the sample. What should the technician do?
determination that at least 8 hours has elapsed since final set. CORRECT ANSWERS Preparation of specimens for transport includes:
4.8% CORRECT ANSWERS If the aggregate correction factor for a given source of fine
and coarse aggregate is found to be 0.2% in a pressure air meter, and an air content value of 5.0% is read on the gauge of the same air meter containing concrete with the same aggregate, what is the correct air content?
Protected from jarring, moisture loss, and freezing. CORRECT ANSWERS Strength test
specimens transported from the field to the testing laboratory must be:
5 minutes CORRECT ANSWERS Tests for slump and air content must be started within
[ ] after obtaining the final portion of the composite sample.
1 cubic foot CORRECT ANSWERS The minimum size for samples to be used strength test is:
False CORRECT ANSWERS After the strike-off of the measure used to determine density, a small quantity of concrete may be added to correct a deficiency. True of False?
60 to 80 degrees Fahrenheit CORRECT ANSWERS For normal strength concretes, what temperature range must be maintained for test cylinders during initial curing?
False CORRECT ANSWERS When the concrete contains large aggregate, the testing technician should wet-sieve the sample before making density (unit weight) tests for use
in yield computations. True or False?
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