ACI Test Questions And Answers Latest Update
ACI Test Questions And Answers
Latest Update
The total time allowed between obtaining the first and final portions of a composite
sample is - ✔✔✔-15 minutes
When it is necessary to wet sieve the concrete sample, wet sieving should be
performed after the individual samples are remixed into a composite sample (T or
F) - ✔✔✔-F
Tests for slump, temperature, and air content must begin within ______ minutes
after obtaining the composite sample - ✔✔✔-5 minutes
Begin molding test specimens within ______ minutes after obtaining the composite
sample - ✔✔✔-15 minutes
The concrete samples should be protected from - ✔✔✔-the sun, wind, and other
sources of rapid evaporation, from contamination
When test specimens are to be molded, the minimum size of sample obtained is -
✔✔✔-28 L (1 ft^3)
The primary objective of the sampling process is to obtain a representative sample
(T or F) - ✔✔✔-T
When sampling from a revolving drum truck mixer collect concrete from ______
portions of the batch - ✔✔✔-2 or more
Wet sieving is performed - ✔✔✔-when the concrete contains aggregates larger
than appropriate for a test
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, ACI Test Questions And Answers Latest Update
When sampling from a paving mixer it is not acceptable to place 3 small containers
on the sub grade in order to obtain the required samples of concrete (T or F) -
✔✔✔-F
TEMPERATURE - ✔✔✔-
it may require up to ___ min before the temp stabilizes when the NMS of the coarse
agg is greater than ___ - ✔✔✔-20min., 3in.
The container for the concrete shall be large enough to provide at least ___ inches,
or _____ of coarse agg, of concrete in all directions around the TMD - ✔✔✔-3in., 3 x
NMS
The temperature measuring device shall have the capability of measuring the
temperature of the freshly mixed concrete to ± ______ oF accuracy and have a
range of ______ to ______ oF. - ✔✔✔-1,30to120
A composite sample of concrete is not required even if the only purpose for
obtaining the sample is to determine temperature. T or F - ✔✔✔-T
The Temperature Measuring Device used for determining concrete temperature
must be calibrated ______ or whenever there is a question of accuracy. - ✔✔✔-
annually
The temperature of freshly mixed concrete can be measured in - ✔✔✔-all of the
above
Submerge the sensing portion of the thermometer at least ______ inches into the
concrete - ✔✔✔-3
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ACI Test Questions And Answers
Latest Update
The total time allowed between obtaining the first and final portions of a composite
sample is - ✔✔✔-15 minutes
When it is necessary to wet sieve the concrete sample, wet sieving should be
performed after the individual samples are remixed into a composite sample (T or
F) - ✔✔✔-F
Tests for slump, temperature, and air content must begin within ______ minutes
after obtaining the composite sample - ✔✔✔-5 minutes
Begin molding test specimens within ______ minutes after obtaining the composite
sample - ✔✔✔-15 minutes
The concrete samples should be protected from - ✔✔✔-the sun, wind, and other
sources of rapid evaporation, from contamination
When test specimens are to be molded, the minimum size of sample obtained is -
✔✔✔-28 L (1 ft^3)
The primary objective of the sampling process is to obtain a representative sample
(T or F) - ✔✔✔-T
When sampling from a revolving drum truck mixer collect concrete from ______
portions of the batch - ✔✔✔-2 or more
Wet sieving is performed - ✔✔✔-when the concrete contains aggregates larger
than appropriate for a test
©®™ Page 1
, ACI Test Questions And Answers Latest Update
When sampling from a paving mixer it is not acceptable to place 3 small containers
on the sub grade in order to obtain the required samples of concrete (T or F) -
✔✔✔-F
TEMPERATURE - ✔✔✔-
it may require up to ___ min before the temp stabilizes when the NMS of the coarse
agg is greater than ___ - ✔✔✔-20min., 3in.
The container for the concrete shall be large enough to provide at least ___ inches,
or _____ of coarse agg, of concrete in all directions around the TMD - ✔✔✔-3in., 3 x
NMS
The temperature measuring device shall have the capability of measuring the
temperature of the freshly mixed concrete to ± ______ oF accuracy and have a
range of ______ to ______ oF. - ✔✔✔-1,30to120
A composite sample of concrete is not required even if the only purpose for
obtaining the sample is to determine temperature. T or F - ✔✔✔-T
The Temperature Measuring Device used for determining concrete temperature
must be calibrated ______ or whenever there is a question of accuracy. - ✔✔✔-
annually
The temperature of freshly mixed concrete can be measured in - ✔✔✔-all of the
above
Submerge the sensing portion of the thermometer at least ______ inches into the
concrete - ✔✔✔-3
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