ACI Test Questions With Correct Answers
The total time allowed between obtaining the first and final portions of
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a composite sample is - CORRECT ANSWER✔✔-15 minutes
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When it is necessary to wet sieve the concrete sample, wet sieving
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should be performed after the individual samples are remixed into a
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composite sample (T or F) - CORRECT ANSWER✔✔-F
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Tests for slump, temperature, and air content must begin within ______
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minutes after obtaining the composite sample - CORRECT ANSWER✔✔-
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5 minutes
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Begin molding test specimens within ______ minutes after obtaining
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the composite sample - CORRECT ANSWER✔✔-15 minutes
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The concrete samples should be protected from - CORRECT
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ANSWER✔✔-the sun, wind, and other sources of rapid evaporation, | | | | | | | | |
from contamination
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When test specimens are to be molded, the minimum size of sample
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obtained is - CORRECT ANSWER✔✔-28 L (1 ft^3)
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, The primary objective of the sampling process is to obtain a
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representative sample (T or F) - CORRECT ANSWER✔✔-T | | | | | | |
When sampling from a revolving drum truck mixer collect concrete from
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______ portions of the batch - CORRECT ANSWER✔✔-2 or more
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Wet sieving is performed - CORRECT ANSWER✔✔-when the concrete
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contains aggregates larger than appropriate for a test
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When sampling from a paving mixer it is not acceptable to place 3 small
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containers on the sub grade in order to obtain the required samples of
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concrete (T or F) - CORRECT ANSWER✔✔-F
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TEMPERATURE - CORRECT ANSWER✔✔- | | |
it may require up to ___ min before the temp stabilizes when the NMS
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of the coarse agg is greater than ___ - CORRECT ANSWER✔✔-20min.,
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3in.
The container for the concrete shall be large enough to provide at least
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___ inches, or _____ of coarse agg, of concrete in all directions around
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the TMD - CORRECT ANSWER✔✔-3in., 3 x NMS
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The total time allowed between obtaining the first and final portions of
| | | | | | | | | | | |
a composite sample is - CORRECT ANSWER✔✔-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) - CORRECT ANSWER✔✔-F
| | | | | | |
Tests for slump, temperature, and air content must begin within ______
| | | | | | | | | | |
minutes after obtaining the composite sample - CORRECT ANSWER✔✔-
| | | | | | | |
5 minutes
|
Begin molding test specimens within ______ minutes after obtaining
| | | | | | | | |
the composite sample - CORRECT ANSWER✔✔-15 minutes
| | | | | |
The concrete samples should be protected from - CORRECT
| | | | | | | | |
ANSWER✔✔-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 - CORRECT ANSWER✔✔-28 L (1 ft^3)
| | | | | | |
, The primary objective of the sampling process is to obtain a
| | | | | | | | | | |
representative sample (T or F) - CORRECT ANSWER✔✔-T | | | | | | |
When sampling from a revolving drum truck mixer collect concrete from
| | | | | | | | | |
______ portions of the batch - CORRECT ANSWER✔✔-2 or more
| | | | | | | | | |
Wet sieving is performed - CORRECT ANSWER✔✔-when the concrete
| | | | | | | | |
contains aggregates larger than appropriate for a test
| | | | | | |
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
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concrete (T or F) - CORRECT ANSWER✔✔-F
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TEMPERATURE - CORRECT ANSWER✔✔- | | |
it may require up to ___ min before the temp stabilizes when the NMS
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of the coarse agg is greater than ___ - CORRECT ANSWER✔✔-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
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the TMD - CORRECT ANSWER✔✔-3in., 3 x NMS
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