ACI Certification- Concrete Field Testing Technician
Grade 1 CP-1 (12) Test With Correct Answers
ASTM C1064
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.
3"
The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ± ______ °F throughout a range of ____________.
1 degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a
question of ______ .
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
,The temperature of concrete may be measured in a wall form. True or False?
True
What must be done to the sample container prior to sampling the concrete?
Dampen with water
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete?
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?
minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F
1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True
or False?
,False
ASTM C172
Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____
with specification requirements.
Compliance
This method covers sampling from four types of mixers, which are _____ , _____ ,
_____ , and _____ .
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.
15
Portions of a composite sample shall be thoroughly remixed before beginning tests on
the sample. True or False?
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.
5
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite
sample.
15
The concrete sample must be protected from contamination and _____.
Rapid evaporation
The minimum size sample for making strength test specimens is _____.
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.
2
Grade 1 CP-1 (12) Test With Correct Answers
ASTM C1064
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.
3"
The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ± ______ °F throughout a range of ____________.
1 degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a
question of ______ .
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
,The temperature of concrete may be measured in a wall form. True or False?
True
What must be done to the sample container prior to sampling the concrete?
Dampen with water
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete?
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?
minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F
1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True
or False?
,False
ASTM C172
Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____
with specification requirements.
Compliance
This method covers sampling from four types of mixers, which are _____ , _____ ,
_____ , and _____ .
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.
15
Portions of a composite sample shall be thoroughly remixed before beginning tests on
the sample. True or False?
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.
5
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite
sample.
15
The concrete sample must be protected from contamination and _____.
Rapid evaporation
The minimum size sample for making strength test specimens is _____.
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.
2
