ACI CERTIFICATION CONCRETE FIELD-TESTING TECHNICIAN GRADE 1 CP-
1|QUESTIONS AND VERIFIED ANSWERS|NEW UPDATE 2026/2027|GRADED A+
ASTM C1064
CORRECT|ANSWER
Standard Test Method For Temperature of Freshly Mixed Hydraulic-Cement Concrete
The sensor of the temperature measuring device shall be submerged a minimum of ______ inches into
the freshly mixed concrete.
CORRECT|ANSWER
3"
The temperature measuring device shall have a capacity of measuring temperature of freshly mixed
concrete to ± ______ °F throughout a range of ____________.
CORRECT|ANSWER
1 degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a question of
______ .
CORRECT|ANSWER
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
CORRECT|ANSWER
True
,The temperature of concrete may be measured in a wall form. True or False?
CORRECT|ANSWER
True
What must be done to the sample container prior to sampling the concrete?
CORRECT|ANSWER
Dampen with water
What must be done to the concrete surrounding the temperature measuring device after the device is
submerged in the fresh concrete?
CORRECT|ANSWER
Close off air voids by gently pressing the concrete around the device
How long must the temperature measuring device remain in the freshly mixed concrete?
CORRECT|ANSWER
minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F
CORRECT|ANSWER
1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False?
CORRECT|ANSWER
,False
ASTM C172
CORRECT|ANSWER
Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____ with specification
requirements.
CORRECT|ANSWER
Compliance
This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and _____ .
CORRECT|ANSWER
Stationary mixers, paving mixers, revolving drum mixers and open top mixers
The maximum allowable time between obtaining the first and final portions of a composite sample is
_____ minutes.
CORRECT|ANSWER
15
Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample. True
or False?
CORRECT|ANSWER
True
, The maximum elapsed time allowed between obtaining the final portion of the composite sample and
beginning the tests for slump, temperature, and air content is _____ minutes.
CORRECT|ANSWER
5
The molding of strength test specimens shall begin within _____ minutes after fabricating the composite
sample.
CORRECT|ANSWER
15
The concrete sample must be protected from contamination and _____.
CORRECT|ANSWER
Rapid evaporation
The minimum size sample for making strength test specimens is _____.
CORRECT|ANSWER
1 cubic foot
When sampling from a stationary mixer, the batch must be sampled at _____ or more regularly spaced
intervals during discharge of the middle portion of the batch.
CORRECT|ANSWER
2
1|QUESTIONS AND VERIFIED ANSWERS|NEW UPDATE 2026/2027|GRADED A+
ASTM C1064
CORRECT|ANSWER
Standard Test Method For Temperature of Freshly Mixed Hydraulic-Cement Concrete
The sensor of the temperature measuring device shall be submerged a minimum of ______ inches into
the freshly mixed concrete.
CORRECT|ANSWER
3"
The temperature measuring device shall have a capacity of measuring temperature of freshly mixed
concrete to ± ______ °F throughout a range of ____________.
CORRECT|ANSWER
1 degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a question of
______ .
CORRECT|ANSWER
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
CORRECT|ANSWER
True
,The temperature of concrete may be measured in a wall form. True or False?
CORRECT|ANSWER
True
What must be done to the sample container prior to sampling the concrete?
CORRECT|ANSWER
Dampen with water
What must be done to the concrete surrounding the temperature measuring device after the device is
submerged in the fresh concrete?
CORRECT|ANSWER
Close off air voids by gently pressing the concrete around the device
How long must the temperature measuring device remain in the freshly mixed concrete?
CORRECT|ANSWER
minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F
CORRECT|ANSWER
1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False?
CORRECT|ANSWER
,False
ASTM C172
CORRECT|ANSWER
Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____ with specification
requirements.
CORRECT|ANSWER
Compliance
This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and _____ .
CORRECT|ANSWER
Stationary mixers, paving mixers, revolving drum mixers and open top mixers
The maximum allowable time between obtaining the first and final portions of a composite sample is
_____ minutes.
CORRECT|ANSWER
15
Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample. True
or False?
CORRECT|ANSWER
True
, The maximum elapsed time allowed between obtaining the final portion of the composite sample and
beginning the tests for slump, temperature, and air content is _____ minutes.
CORRECT|ANSWER
5
The molding of strength test specimens shall begin within _____ minutes after fabricating the composite
sample.
CORRECT|ANSWER
15
The concrete sample must be protected from contamination and _____.
CORRECT|ANSWER
Rapid evaporation
The minimum size sample for making strength test specimens is _____.
CORRECT|ANSWER
1 cubic foot
When sampling from a stationary mixer, the batch must be sampled at _____ or more regularly spaced
intervals during discharge of the middle portion of the batch.
CORRECT|ANSWER
2
