ACI- Concrete Field-Testing Technician - Grade 1 Exam Questions
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Terms in this set (133)
Q1. Start molding specimens for B. False
strength tests within 30 minutes
after fabricating the composite ASTM C172 -Para (4.1.2) - Start molding.
sample. specimens for strength tests within 15 min
after fabricating the composite sample.
A. True
B. False
Q2. The maximum allowable time B. False
between obtaining the first and
last portions of the composite ASTM C172 - Para (4.1)- The elapsed time shall not exceed 15
sample may not exceed 5 min. between obtaining the first and final portions of the
minutes. composite sample.
A. True
B. False
Q3. The composite concrete A. True
sample must be protected
from sun, wind, ASTM C172 - Para (4.1.2)
contamination and rapid
evaporation.
A. True
B. False
,Q4. If the concrete contains A. True
aggregates
larger than those that are ASTM C172- Para (6.1)
appropriate for a size of mold
or equipment used, the
sample should be wet sieved
before making the test.
A. True
B. False
Q5. The composite sample should B. False
not be remixed before beginning
any tests. ASTM C172-Para (4.1.1) -The sample shall be combined and
remixed with a shovel the minimum amount necessary to ensure
A. True uniformity and compliance with the maximum time limits
B. False
B. False
Q6. Sampling should
normally be performed, as the ASTM C172-Para (5). NOTE 2—Sampling should normally
concrete is discharged from be performed as the concrete is delivered from the mixer.
the mixer.
To the conveying vehicle used to transport the
A. True concrete to the forms; however, specifications may require
B. False other points of sampling, such as the discharge of a concrete
pump.
Q7. ASTM Method C172 A. True
includes sampling from
stationary mixers, paving ASTM C172- Para (1.1)
mixers, truck mixers, agitators,
and non-agitating
equipment.
A. True
B. False
Q8. After sampling is D. None of the above
completed, start the tests for
slump and air content ASTM C172- Para (4.1.2) Start tests for slump, temperature,
within: and air content within 5 min after obtaining the final portion
of the composite sample.
A. 2 ½ minutes
B. 10 minutes
, C. 15 minutes
D. None of the above
Q9. In any case, do not obtain A. All the water and admixtures have been added to the concrete.
samples until:
ASTM C172- Para (5.2.3). In any case do not obtain samples
A. All the water and admixtures until after all of the water has been added to the mixer.
have been added to the
concrete
B. 200 revolutions of the drum
have been obtained
C. ½ of the water has been added
D. None of the above
& Answers | 100% Verified solutions |Questions with Correct
Answers 2025 latest update!!
Terms in this set (133)
Q1. Start molding specimens for B. False
strength tests within 30 minutes
after fabricating the composite ASTM C172 -Para (4.1.2) - Start molding.
sample. specimens for strength tests within 15 min
after fabricating the composite sample.
A. True
B. False
Q2. The maximum allowable time B. False
between obtaining the first and
last portions of the composite ASTM C172 - Para (4.1)- The elapsed time shall not exceed 15
sample may not exceed 5 min. between obtaining the first and final portions of the
minutes. composite sample.
A. True
B. False
Q3. The composite concrete A. True
sample must be protected
from sun, wind, ASTM C172 - Para (4.1.2)
contamination and rapid
evaporation.
A. True
B. False
,Q4. If the concrete contains A. True
aggregates
larger than those that are ASTM C172- Para (6.1)
appropriate for a size of mold
or equipment used, the
sample should be wet sieved
before making the test.
A. True
B. False
Q5. The composite sample should B. False
not be remixed before beginning
any tests. ASTM C172-Para (4.1.1) -The sample shall be combined and
remixed with a shovel the minimum amount necessary to ensure
A. True uniformity and compliance with the maximum time limits
B. False
B. False
Q6. Sampling should
normally be performed, as the ASTM C172-Para (5). NOTE 2—Sampling should normally
concrete is discharged from be performed as the concrete is delivered from the mixer.
the mixer.
To the conveying vehicle used to transport the
A. True concrete to the forms; however, specifications may require
B. False other points of sampling, such as the discharge of a concrete
pump.
Q7. ASTM Method C172 A. True
includes sampling from
stationary mixers, paving ASTM C172- Para (1.1)
mixers, truck mixers, agitators,
and non-agitating
equipment.
A. True
B. False
Q8. After sampling is D. None of the above
completed, start the tests for
slump and air content ASTM C172- Para (4.1.2) Start tests for slump, temperature,
within: and air content within 5 min after obtaining the final portion
of the composite sample.
A. 2 ½ minutes
B. 10 minutes
, C. 15 minutes
D. None of the above
Q9. In any case, do not obtain A. All the water and admixtures have been added to the concrete.
samples until:
ASTM C172- Para (5.2.3). In any case do not obtain samples
A. All the water and admixtures until after all of the water has been added to the mixer.
have been added to the
concrete
B. 200 revolutions of the drum
have been obtained
C. ½ of the water has been added
D. None of the above
