ACI Grade 1 Field Testing Certification
Practice Test Questions-EXAM STUDY
GUIDE ACCURATE QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES || 100% GUARANTEED PASS
<BRAND NEW VERSION>
For concrete with aggregates less than 3 inches, the thermometer must remain in the fresh
concrete sample a minimum of 5 minutes or until the temperature reading stabilizes. (True or
False)
False
The temperature measuring device must be accurate to within 0.1 degrees. (True or False)
False
The temperature measuring device shall have a capacity of measuring temperature of freshly
mixed concrete throughout a range of ______ to ______ Fahrenheit (
A composite sample is not needed if only the temperature test is being run. (True or False)
True
The temperature of fresh concrete in a placement must be measured by inserting a
thermometer into the top six inches of concrete. (True or False)
False
The temperature of the concrete is recorded to the nearest _______ Fahrenheit (______
Celcius).
2, 0.5
ASTM C1064 states the container used to measure temperature of concrete must be large
enough to provided at least 5 inches of concrete around the sensor. (True or False)
, Calibrate the temperature measuring device at least _________, or at least whenever there is
a question of accuracy.
Annually
After the thermometer is placed in the concrete:
Gently press concrete around the thermometer
According to ASTM C1064, what is one reason to take the temperature of concrete?
Verify conformance
It is allowable to remove the temperature measuring devices from the freshly mixed concrete
to read the temperature if you cannot see the reading. (True or False)
The maximum allowable time between obtaining the first and last portions of the composite
sample may not exceed 5 minutes. (True or False)
Start molding specimens for strength tests within 30 minutes after fabricating the composite
sample. (True or False)
The composite concrete sample must be protected from sun, wind, contamination, and rapid
evaporation. (True or False)
If the concrete contains aggregates larger than those that are appropriate for a size of mold or
equipment used, the sample should be wet-sieved before making the test. (True or False)
The composite sample should not be remixed before beginning any tests. (True or False)
Sampling should normally be performed, as the concrete is discharged from the mixer. (True
or False)
ASTM Method C172 includes sampling from stationary mixers, paving mixers, truck mixers,
agitators, and non-agitating equipment. (True or False)
After sampling is completed, start the tests for slump and air content within:
In any case, do not obtain samples until:
No samples shall be taken before _________ or after _________ of the batch has been
discharged.
When strength tests are to be made, the minimum size of the composite sample shall be:
Sample the concrete from the chute of a truck mixer by:
Fresh concrete to be tested at the job site should be sampled from:
Practice Test Questions-EXAM STUDY
GUIDE ACCURATE QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES || 100% GUARANTEED PASS
<BRAND NEW VERSION>
For concrete with aggregates less than 3 inches, the thermometer must remain in the fresh
concrete sample a minimum of 5 minutes or until the temperature reading stabilizes. (True or
False)
False
The temperature measuring device must be accurate to within 0.1 degrees. (True or False)
False
The temperature measuring device shall have a capacity of measuring temperature of freshly
mixed concrete throughout a range of ______ to ______ Fahrenheit (
A composite sample is not needed if only the temperature test is being run. (True or False)
True
The temperature of fresh concrete in a placement must be measured by inserting a
thermometer into the top six inches of concrete. (True or False)
False
The temperature of the concrete is recorded to the nearest _______ Fahrenheit (______
Celcius).
2, 0.5
ASTM C1064 states the container used to measure temperature of concrete must be large
enough to provided at least 5 inches of concrete around the sensor. (True or False)
, Calibrate the temperature measuring device at least _________, or at least whenever there is
a question of accuracy.
Annually
After the thermometer is placed in the concrete:
Gently press concrete around the thermometer
According to ASTM C1064, what is one reason to take the temperature of concrete?
Verify conformance
It is allowable to remove the temperature measuring devices from the freshly mixed concrete
to read the temperature if you cannot see the reading. (True or False)
The maximum allowable time between obtaining the first and last portions of the composite
sample may not exceed 5 minutes. (True or False)
Start molding specimens for strength tests within 30 minutes after fabricating the composite
sample. (True or False)
The composite concrete sample must be protected from sun, wind, contamination, and rapid
evaporation. (True or False)
If the concrete contains aggregates larger than those that are appropriate for a size of mold or
equipment used, the sample should be wet-sieved before making the test. (True or False)
The composite sample should not be remixed before beginning any tests. (True or False)
Sampling should normally be performed, as the concrete is discharged from the mixer. (True
or False)
ASTM Method C172 includes sampling from stationary mixers, paving mixers, truck mixers,
agitators, and non-agitating equipment. (True or False)
After sampling is completed, start the tests for slump and air content within:
In any case, do not obtain samples until:
No samples shall be taken before _________ or after _________ of the batch has been
discharged.
When strength tests are to be made, the minimum size of the composite sample shall be:
Sample the concrete from the chute of a truck mixer by:
Fresh concrete to be tested at the job site should be sampled from:
