ACI Grade 1 Field Testing Certification Practice
Test - QUESTIONS AND ANSWERS
Save
Terms in this set (100)
For concrete with aggregates less False (2-5 minutes)
than 3 inches, the thermometer must
remain in the fresh concrete sample
a minimum of 5 minutes or until the
temperature reading stabilizes. (T
or F)
The temperature measuring
device must be accurate to within 0.1
degree. (T or F)
The temperature measuring device 30 to 120 degree F ( 0 to 50 degree
C) shall have a capacity of measuring
temperature of freshly mixed
concrete throughout a range of _____
to _____ degree F ( ______ to__degree
C)
A composite sample is not needed if True
only the temperature test is being
run. (T or F)
,The temperature of fresh concrete in False (3 in.)
a placement must be measured by
inserting a thermometer into the top
six inches of concrete. (T or F)
The temperature of the concrete is 1 degree F (0.5 degree
C) recorded to the nearest degree
F (____degree C)
ASTM C1064 states the container
used to measure temperature of
concrete must be large enough to
provide at least 5 inches of concrete
around the sensor. (T or F)
Calibrate the temperature measuring Annually
device at least______, or whenever
there is a question of accuracy.
After the thermometer is placed in Gently press concrete around the
thermometer the concrete:
According to ASTM C1064, what is Verify conformance
one reason to take the temperature
of concrete?
It is allowable to remove the
False temperature measuring devices from
the freshly mixed concrete to read
the temperature if you cannot see
the reading. (T or F)
, The maximum allowable time
False between obtaining the first and last
portions of the composite sample
may not exceed 5 minutes. (T or F)
Start molding specimens for strength False (15 mins)
tests within 30 minutes after
fabricating the composite sample. (T
or F)
The composite concrete sample False (Contamination and rapid
evaporation) must be protected from sun, wind,
contamination and rapid evaporation.
(T or F)
If the concrete contains aggregates False (wet
screened) larger than those that are
appropriate for a size of mold or
equipment used, the sample should
be wet-sieved before making the test.
(T or F)
The composite sample not be
False remixed before beginning any tests.
(T or F)
Sampling should normally be True
performed, as the concrete is
discharged from the mixer. (T or F)
ASTM Method C172 includes the True
sampling from stationary mixers,
paving mixers, truck mixers, agitators,
and non-agitating equipment. (T or F)
Test - QUESTIONS AND ANSWERS
Save
Terms in this set (100)
For concrete with aggregates less False (2-5 minutes)
than 3 inches, the thermometer must
remain in the fresh concrete sample
a minimum of 5 minutes or until the
temperature reading stabilizes. (T
or F)
The temperature measuring
device must be accurate to within 0.1
degree. (T or F)
The temperature measuring device 30 to 120 degree F ( 0 to 50 degree
C) shall have a capacity of measuring
temperature of freshly mixed
concrete throughout a range of _____
to _____ degree F ( ______ to__degree
C)
A composite sample is not needed if True
only the temperature test is being
run. (T or F)
,The temperature of fresh concrete in False (3 in.)
a placement must be measured by
inserting a thermometer into the top
six inches of concrete. (T or F)
The temperature of the concrete is 1 degree F (0.5 degree
C) recorded to the nearest degree
F (____degree C)
ASTM C1064 states the container
used to measure temperature of
concrete must be large enough to
provide at least 5 inches of concrete
around the sensor. (T or F)
Calibrate the temperature measuring Annually
device at least______, or whenever
there is a question of accuracy.
After the thermometer is placed in Gently press concrete around the
thermometer the concrete:
According to ASTM C1064, what is Verify conformance
one reason to take the temperature
of concrete?
It is allowable to remove the
False temperature measuring devices from
the freshly mixed concrete to read
the temperature if you cannot see
the reading. (T or F)
, The maximum allowable time
False between obtaining the first and last
portions of the composite sample
may not exceed 5 minutes. (T or F)
Start molding specimens for strength False (15 mins)
tests within 30 minutes after
fabricating the composite sample. (T
or F)
The composite concrete sample False (Contamination and rapid
evaporation) must be protected from sun, wind,
contamination and rapid evaporation.
(T or F)
If the concrete contains aggregates False (wet
screened) larger than those that are
appropriate for a size of mold or
equipment used, the sample should
be wet-sieved before making the test.
(T or F)
The composite sample not be
False remixed before beginning any tests.
(T or F)
Sampling should normally be True
performed, as the concrete is
discharged from the mixer. (T or F)
ASTM Method C172 includes the True
sampling from stationary mixers,
paving mixers, truck mixers, agitators,
and non-agitating equipment. (T or F)
