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ACI Test New 2023 /81 Questions And Answers Download To Pass!!!!
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ACI Test New 2023 /81 Questions And AnswersDownload To Pass!!!!
Quiz :The total time allowed between obtaining the first and final portions of a
composite sample is - Answer :15 minutes
Quiz :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) - Answer :F
Quiz :Tests for slump, temperature, and air content must begin within ______
minutes after obtaining the composite sample - Answer :5 minutes
Quiz :Begin molding test specimens within ______ minutes after obtaining the
composite sample - Answer :15 minutes
Quiz :The concrete samples should be protected from - Answer :the sun,
wind, and other sources of rapid evaporation, from contamination
Quiz :When test specimens are to be molded, the minimum size of sample
obtained is - Answer :28 L (1 ft^3)
Quiz :The primary objective of the sampling process is to obtain a
representative sample (T or F) - Answer :T
Quiz :When sampling from a revolving drum truck mixer collect concrete from
______ portions of the batch - Answer :2 or more
Quiz :Wet sieving is performed - Answer :when the concrete contains
aggregates larger than appropriate for a test
Quiz :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) - Answer :F
Quiz :TEMPERATURE - Answer :
Quiz :it may require up to ___ min before the temp stabilizes when the NMS
of the coarse agg is greater than ___ - Answer :20min., 3in.
, Quiz :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 - Answer :3in., 3 x NMS
Quiz :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. - Answer :1,30to120
Quiz :A composite sample of concrete is not required even if the only purpose
for obtaining the sample is to determine temperature. T or F - Answer :T
Quiz :The Temperature Measuring Device used for determining concrete
temperature must be calibrated ______ or whenever there is a question of
accuracy. - Answer :annually
Quiz :The temperature of freshly mixed concrete can be measured in -
Answer :all of the above
Quiz :Submerge the sensing portion of the thermometer at least ______
inches into the concrete - Answer :3
Quiz :Gently press concrete around the thermometer such that the_______
does not
affect the reading. - Answer :ambient air temp
Quiz :The thermometer must remain in the concrete during the measurement
for a minimum of ______ minutes. In addition, the temperature measurement
must be completed within _______ minutes after obtaining the sample. -
Answer :2, 5
Quiz :The temperature of freshly mixed concrete is measured and recorded to
the nearest _____ - Answer :1 degree
Quiz :SLUMP TEST - Answer :
Quiz :****The slump test does not provide an indication of the water content
of a concrete mixture. - Answer :F
Quiz :A slump mold can be fabricated from both plastic and metal. - Answer :T
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