Exam (elaborations)
ACI Certification Test Questions and Answers- Concrete Field Testing Technician Grade 1 CP-1 (12)
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ACI Certification Test Questions and Answers- Concrete Field Testing Technician Grade 1 CP-1 (12)
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ACI Certification- Concrete Field TestingTechnician Grade 1 CP-1 (12)
ASTM C1064 - 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. - Answer-3"
The temperature measuring device shall have a capacity of measuring temperature of freshly mixed
concrete to ± ______ °F throughout a range of ____________. - Answer-1 degree, 30 degrees to 120
degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a question of
______ . - Answer-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? - Answer-True
,The temperature of concrete may be measured in a wall form. True or False? - Answer-True
What must be done to the sample container prior to sampling the concrete? - 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? - 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? - Answer-
minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F - Answer-1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False? - Answer-
False
ASTM C172 - 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. - Answer-Compliance
This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and _____ . -
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. - Answer-15
, Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample. True
or False? - 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. - Answer-5
The molding of strength test specimens shall begin within _____ minutes after fabricating the composite
sample. - Answer-15
The concrete sample must be protected from contamination and _____. - Answer-Rapid evaporation
The minimum size sample for making strength test specimens is _____. - 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. - 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. - 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. - 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? - Answer-False
The composite sample from a truck mixer must be obtained from the _____ portion of the batch. -
Answer-middle
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