ACI WRITTEN EXAM QUESTIONS QUESTIONS |
TESTED AND PROVEN ANSWERS | LATEST UPDATE
2024/2025 100% (GRADE A+)
The method of determining air content of concrete containing lightweight aggregate is the
pressure method
Ans>> 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.
Ans>> 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?
Ans>> Disregard the test and retest on another portion of the sample.
Preparation of specimens for transport includes:
Ans>> Determination that at least 8 hours has elapsed since final set.
1
, 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?
Ans>> 4.8%
Strength test specimens transported from the field to the testing laboratory must be:
Ans>> 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.
Ans>> 5 MInutes
The minimum size for samples to be used for strength test is:
Ans>> 1 cubic foot
Is the following statement true or false? After strike off of the measure used to determine density,
a small quantity of concrete may be added to correct a deficiency.
Ans>> False
2
TESTED AND PROVEN ANSWERS | LATEST UPDATE
2024/2025 100% (GRADE A+)
The method of determining air content of concrete containing lightweight aggregate is the
pressure method
Ans>> 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.
Ans>> 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?
Ans>> Disregard the test and retest on another portion of the sample.
Preparation of specimens for transport includes:
Ans>> Determination that at least 8 hours has elapsed since final set.
1
, 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?
Ans>> 4.8%
Strength test specimens transported from the field to the testing laboratory must be:
Ans>> 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.
Ans>> 5 MInutes
The minimum size for samples to be used for strength test is:
Ans>> 1 cubic foot
Is the following statement true or false? After strike off of the measure used to determine density,
a small quantity of concrete may be added to correct a deficiency.
Ans>> False
2
