ACI WRITTEN EXAM QUESTIONS WITH
CORRECT ANSWERS 2025/2026
The method of determining air content of concrete containing lightweight aggregate is the
pressure method - CORRECT ANSWER -False. Relatively dense
Is the following statement true or false? When making a test cylinder from concrete being used
in construction, the field technician must also measure the slump of the concrete. - CORRECT
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? -
CORRECT ANSWER -Disregard the test and retest on another portion of the sample.
Preparation of specimens for transport includes: - CORRECT ANSWER -Determination that at
least 8 hours has elapsed since final set.
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? -
CORRECT ANSWER -4.8%
Strength test specimens transported from the field to the testing laboratory must be: - CORRECT
ANSWER -Protected from jarring, moisture loss, and freezing
Tests for slump and air content must be started within ________ after obtaining the final
portion of the composite sample. - CORRECT ANSWER -5 MInutes
The minimum size for samples to be used for strength test is: - CORRECT ANSWER -1 cubic foot
CORRECT ANSWERS 2025/2026
The method of determining air content of concrete containing lightweight aggregate is the
pressure method - CORRECT ANSWER -False. Relatively dense
Is the following statement true or false? When making a test cylinder from concrete being used
in construction, the field technician must also measure the slump of the concrete. - CORRECT
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? -
CORRECT ANSWER -Disregard the test and retest on another portion of the sample.
Preparation of specimens for transport includes: - CORRECT ANSWER -Determination that at
least 8 hours has elapsed since final set.
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? -
CORRECT ANSWER -4.8%
Strength test specimens transported from the field to the testing laboratory must be: - CORRECT
ANSWER -Protected from jarring, moisture loss, and freezing
Tests for slump and air content must be started within ________ after obtaining the final
portion of the composite sample. - CORRECT ANSWER -5 MInutes
The minimum size for samples to be used for strength test is: - CORRECT ANSWER -1 cubic foot
