ACI Certification- Concrete Field Testing
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Technician Grade 1 CP-1 (12) Exam with accurate |!| |!| |!| |!| |!| |!| |!| |!|
solutions
ASTM C1064 - correct answer✔✔Standard Test Method For Temperature of
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Freshly Mixed Hydraulic-Cement Concrete
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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
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of ____________. - correct answer✔✔1 degree, 30 degrees to 120 degrees
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The temperature measuring device shall be calibrated ______ , or whenever
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
there is a question of ______ . - correct answer✔✔Annually, accuracy
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The temperature of concrete may be measured in a wheelbarrow. True or
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False? - correct answer✔✔True
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The temperature of concrete may be measured in a wall form. True or
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False? - correct answer✔✔True
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What must be done to the sample container prior to sampling the
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concrete? - correct answer✔✔Dampen with water |!| |!| |!| |!| |!|
,What must be done to the concrete surrounding the temperature
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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
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five minutes
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The temperature of the concrete is reported to the nearest ______ °F -
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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
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Mixed Concrete |!|
Sampling by this method is required when tests are to be made to
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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
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of a composite sample is _____ minutes. - correct answer✔✔15
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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
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The molding of strength test specimens shall begin within _____ minutes
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after fabricating the composite
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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
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portion of the batch. - correct answer✔✔2|!| |!| |!| |!| |!| |!|
The composite sample for a paving mixer must represent a minimum of
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
_____ different portions of the batch of concrete taken from the pile after
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
discharge. - correct answer✔✔5 |!| |!| |!|
When sampling from a revolving drum truck mixer, concrete must be
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
sampled at a minimum of _____ regularly spaced intervals during discharge
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
of the middle portion of the batch. - correct answer✔✔2
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Concrete samples from a truck mixer must be obtained before any water
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or admixtures are added to the mixer at the job site. True or False? -
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correct answer✔✔False |!|
|!| |!| |!| |!| |!|
Technician Grade 1 CP-1 (12) Exam with accurate |!| |!| |!| |!| |!| |!| |!| |!|
solutions
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|!| |!| |!| |!| |!| |!|
The composite sample for a paving mixer must represent a minimum of
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
_____ different portions of the batch of concrete taken from the pile after
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
discharge. - correct answer✔✔5 |!| |!| |!|
When sampling from a revolving drum truck mixer, concrete must be
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
sampled at a minimum of _____ regularly spaced intervals during discharge
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
of the middle portion of the batch. - correct answer✔✔2
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
Concrete samples from a truck mixer must be obtained before any water
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
or admixtures are added to the mixer at the job site. True or False? -
|!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!| |!|
correct answer✔✔False |!|
