ACI Exam 2024
1. The temperature measuring device shall be capable of
accurately measuring
the temperature of freshly mixed concrete to_____
throughout a range of
______: 30 degrees, 120 degrees
2. A composite sample of concrete is required even if the
only purpose for
obtaining the sample is to determine temperature. True or
False?: False
3. A maximum temperature of freshly mixed concrete is
specified in ASTM
C1064. True of False?: False
4. Sampling by this practice covers procedures for obtaining
representative
samples, on which tests are to be performed to determine
____ with quality
requirements of the specifications under which the concrete
is furnished.: -
Compliance
5. The elapsed time between obtaining the first and final
portions of a composite
sample shall not exceed: 15 minutes
6. Start the tests for slump, temperature, and air content
within _____ after
obtaining the final portion of the composite sample: 5
minutes
7. Start molding specimens for strength tests within____
after fabricating the
composite sample: 15 minutes
8. The concrete sample must be protected from
contamination and _____: -
Rapid evaporation
1
, 9. The composite sample from a truck mixer must be
obtained from the _____
portion of the batch: Middle
10. The slump test is applicable to plastic concrete with a
maximum size
aggregate of _____: 1 1/2 inches
11. When the concrete contains aggregate larger than that
permitted for a
particular test method, the sample of concrete must be _____
_____ before
making the test.: Removed by wet sieving the sample over 1 1/2
inch wet sieve
12. The sample of concrete for use in making the slump test
must be obtained
with Practice _____: C172/C172M
13. The surface on which the slump mold will be placed must
be ______,
_______, ______, and _____: flat, moist, nonabsorbent, and rigid
14. The approximate concrete depth (in vertical distance)
after placing the first
layer is _____, and the second layer is _____: 2 5/8 in and 6
1/8 in
15. The slump of the concrete is measured and reported to
the nearest _____.-
: quarter of an inch
16. How much time is allowed to conduct the slump test from
beginning to
completion?: 2 1/2 minutes
17. The diameter of the tampering rod used in this test
method is: 5/8 in +- 1/16
in
18. What is the required minimum frequency of the vibrator
used in this test
method?: 9000 vibrations per minute (150 hz)
2
1. The temperature measuring device shall be capable of
accurately measuring
the temperature of freshly mixed concrete to_____
throughout a range of
______: 30 degrees, 120 degrees
2. A composite sample of concrete is required even if the
only purpose for
obtaining the sample is to determine temperature. True or
False?: False
3. A maximum temperature of freshly mixed concrete is
specified in ASTM
C1064. True of False?: False
4. Sampling by this practice covers procedures for obtaining
representative
samples, on which tests are to be performed to determine
____ with quality
requirements of the specifications under which the concrete
is furnished.: -
Compliance
5. The elapsed time between obtaining the first and final
portions of a composite
sample shall not exceed: 15 minutes
6. Start the tests for slump, temperature, and air content
within _____ after
obtaining the final portion of the composite sample: 5
minutes
7. Start molding specimens for strength tests within____
after fabricating the
composite sample: 15 minutes
8. The concrete sample must be protected from
contamination and _____: -
Rapid evaporation
1
, 9. The composite sample from a truck mixer must be
obtained from the _____
portion of the batch: Middle
10. The slump test is applicable to plastic concrete with a
maximum size
aggregate of _____: 1 1/2 inches
11. When the concrete contains aggregate larger than that
permitted for a
particular test method, the sample of concrete must be _____
_____ before
making the test.: Removed by wet sieving the sample over 1 1/2
inch wet sieve
12. The sample of concrete for use in making the slump test
must be obtained
with Practice _____: C172/C172M
13. The surface on which the slump mold will be placed must
be ______,
_______, ______, and _____: flat, moist, nonabsorbent, and rigid
14. The approximate concrete depth (in vertical distance)
after placing the first
layer is _____, and the second layer is _____: 2 5/8 in and 6
1/8 in
15. The slump of the concrete is measured and reported to
the nearest _____.-
: quarter of an inch
16. How much time is allowed to conduct the slump test from
beginning to
completion?: 2 1/2 minutes
17. The diameter of the tampering rod used in this test
method is: 5/8 in +- 1/16
in
18. What is the required minimum frequency of the vibrator
used in this test
method?: 9000 vibrations per minute (150 hz)
2
