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ACI WRITTEN TEST EXAM 2024 ACTUAL EXAM 2 VERSIONS (VERSION A AND
B) COMPLETE 400 QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) / ALREADY GRADED A+
The total time allowed between obtaining the first and final portions of a composite sample is - 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) - ANSWER ✔✔-F
Tests for slump, temperature, and air content must begin within ______ minutes after obtaining the
composite sample - ANSWER ✔✔-5 minutes
Begin molding test specimens within ______ minutes after obtaining the composite sample - ANSWER
✔✔-15 minutes
The concrete samples should be protected from - 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 - ANSWER ✔✔-28 L (1
ft^3)
The primary objective of the sampling process is to obtain a representative sample (T or F) - ANSWER
✔✔-T
When sampling from a revolving drum truck mixer collect concrete from ______ portions of the batch -
ANSWER ✔✔-2 or more
Wet sieving is performed - ANSWER ✔✔-when the concrete contains aggregates larger than appropriate
for a test
Crafted for Academic Insight by ©Olivia GreenWays 2025. All rights reserved.
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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
TEMPERATURE - ANSWER ✔✔-
it may require up to ___ min before the temp stabilizes when the NMS of the coarse agg is greater than
___ - 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 the TMD - ANSWER ✔✔-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. - ANSWER ✔✔-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 - ANSWER ✔✔-T
The Temperature Measuring Device used for determining concrete temperature must be calibrated
______ or whenever there is a question of accuracy. - ANSWER ✔✔-annually
The temperature of freshly mixed concrete can be measured in - ANSWER ✔✔-all of the above
Submerge the sensing portion of the thermometer at least ______ inches into the concrete - ANSWER ✔✔-
3
Gently press concrete around the thermometer such that the_______ does not
affect the reading. - ANSWER ✔✔-ambient air temp
Crafted for Academic Insight by ©Olivia GreenWays 2025. All rights reserved.
ACI WRITTEN TEST EXAM 2024 ACTUAL EXAM 2 VERSIONS (VERSION A AND
B) COMPLETE 400 QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) / ALREADY GRADED A+
The total time allowed between obtaining the first and final portions of a composite sample is - 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) - ANSWER ✔✔-F
Tests for slump, temperature, and air content must begin within ______ minutes after obtaining the
composite sample - ANSWER ✔✔-5 minutes
Begin molding test specimens within ______ minutes after obtaining the composite sample - ANSWER
✔✔-15 minutes
The concrete samples should be protected from - 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 - ANSWER ✔✔-28 L (1
ft^3)
The primary objective of the sampling process is to obtain a representative sample (T or F) - ANSWER
✔✔-T
When sampling from a revolving drum truck mixer collect concrete from ______ portions of the batch -
ANSWER ✔✔-2 or more
Wet sieving is performed - ANSWER ✔✔-when the concrete contains aggregates larger than appropriate
for a test
Crafted for Academic Insight by ©Olivia GreenWays 2025. All rights reserved.
, 2|Page
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
TEMPERATURE - ANSWER ✔✔-
it may require up to ___ min before the temp stabilizes when the NMS of the coarse agg is greater than
___ - 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 the TMD - ANSWER ✔✔-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. - ANSWER ✔✔-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 - ANSWER ✔✔-T
The Temperature Measuring Device used for determining concrete temperature must be calibrated
______ or whenever there is a question of accuracy. - ANSWER ✔✔-annually
The temperature of freshly mixed concrete can be measured in - ANSWER ✔✔-all of the above
Submerge the sensing portion of the thermometer at least ______ inches into the concrete - ANSWER ✔✔-
3
Gently press concrete around the thermometer such that the_______ does not
affect the reading. - ANSWER ✔✔-ambient air temp
Crafted for Academic Insight by ©Olivia GreenWays 2025. All rights reserved.
