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ACI WRITTEN EXAM (ACTUAL EXAM) WITH QUESTIONS WITH VERY ELABORATED ANSWERS CORRECTRY WELL ORGANIZED LATEST 2024 – 2025 ALREADY GRADED A+ $12.99
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ACI WRITTEN EXAM (ACTUAL EXAM) WITH
QUESTIONS WITH VERY ELABORATED
ANSWERS CORRECTRY WELL ORGANIZED
LATEST 2024 – 2025 ALREADY GRADED A+
The minimum frequency of an internal vibrator used in this procedure -
ANSWERS-9000 vibrations per minute (150Hz)
The container for obtaining the concrete sample used in this procedure can be a
_____, _____, _____, - ANSWERS-Metal pan, wheelbarrow, flat clean
nonabsorbent mixing board
a 6 in by 12 in cylinder mold can be used for concrete containing aggregate with
particles not exceeding _____ in size, without the need for wet sieving concrete -
ANSWERS-2 in (50 mm)
The sample of concrete used in molding test specimens must be obtained in
accordance with what ASTM - ANSWERS-C172
,The temp of concrete may be measured in a wheelbarrow - ANSWERS-true
the temp of concrete may be measured in a wall form - ANSWERS-true
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temp. - ANSWERS-false
What must be done to the sample container prior to sampling the concrete -
ANSWERS-dampen (with water)
The sensor of the temperature measureing device shall be submerged a minimum
of ____ in - ANSWERS-3 (75mm)
The temperature measureing device shall have a capacity of measuring
temperature of freshly mixed conrcrete to +-_____ degrees F throught a range of
_____ - ANSWERS-1(.5 degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is
a question of _____ - ANSWERS-annually, accuracy
what must be done to the concrete surrounding the temp measuring device after
the device has submerged - ANSWERS-Press concrete around measuring device
, How long must the temp device remain in the concrete - ANSWERS-at least 2
minutes (but no more than 5)
After temp of concrete is read, what then is required - ANSWERS-reporting of
temp
the temp of concrete to be measured to the nearest ____degree F - ANSWERS-1
(.5 degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete -
ANSWERS-verify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 - ANSWERS-False
The sample of concrete used for temp determination must be rodded 25 times -
ANSWERS-False
Sampling by this method is required when tests are to be made to determine
____ with specification requirements - ANSWERS-compliance
The method covers sampling from four types of mixers which are _____, _____,
____, and _______ - ANSWERS-stationary mixes, paving mixers, revolving drum
mixers and open top mixers
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