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ACI Concrete Field Testing Technician- Grade I Terms in this set (141) The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [ mm] into the freshly mixed concrete. 3 in. [75 mm] The temperature measuring device shall ha$7.89
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ACI Concrete Field Testing Technician- Grade I Terms in this set (141) The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [ mm] into the freshly mixed concrete. 3 in. [75 mm] The temperature measuring device shall ha
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ACI Concrete Field Testing Technician- Grade I
Terms in this set (141)
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. [ mm] into the freshly mixed
concrete. 3 in. [75 mm]
The temperature measuring device shall
have a capacity of measuring temperatur...
ACI Concrete Field Testing Technician- Grade I
Jeremiah
Terms in this set (141)
The sensor of the temperature measuring 3 in. [75 mm]
device shall be submerged a minimum of
_____ in. [ ___ mm] into the freshly mixed
concrete.
The temperature measuring device shall 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
have a capacity of measuring temperature of
freshly mixed concrete to + _ degrees F
[+- _____ C] throughout a range of___ _.
The temperature measuring device shall be Annually, accuracy
calibrated __ , or whenever there is a
question of ___ _.
The temperature of concrete may be True
measured in a wheelbarrow. True or False?
The temperature of concrete may be True
measured in a wall form. True of False
A composite sample of concrete is required False
even if the only purpose for obtaining the
sample is to determine temperature. True of
False?
What must be done to the sample container Dampen (with water)
prior to sampling the concrete?
What must be done to the concrete Gently press the concrete around the temperature measuring device at the surface of
surrounding the temperature measuring the concrete
device after the device is submerged in the
fresh concrete.
How long must the temperature measuring At least 2 minutes but not more than 5 minutes
device remain in the freshly mixed concrete?
After the temperature of the concrete is Reporting of temperature
read, what is required?
ACI Concrete Field Testing Technician- Grade I
The temperature of concrete is reported to 1 degree F [0.5 C]
the nearest _____ degrees F [ __ C]
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, 9/4/24, 5:50 PM
According to ASTM C1064, what is one Verify conformance to a specified requirement for temperature of concrete
reason to take the temperature of concrete?
A maximum temperature of freshly mixed False
concrete is specified in ASTM C1064. True of
False?
The sample of concrete used for False
temperature determination must be rodded
25 times. True or False?
Sampling by this method is required when Compliance
tests are to be made to determine ____ with
specification requirements.
This method covers sampling from four Stationary mixers, paving mixers, revolving drum mixers, and open top mixers
types of mixtures which are _____, _____, ,
and __ _.
The maximum allowable time between 15
obtaining the first and final portions of a
composite sample is _ minutes.
Portions of a composite sample shall be True
thoroughly remixed bfore beginning tests on
the sample. True of False?
The maximum elapsed time allowed 5
between obtaining the final portion of the
composite sample and beginning the tests
for slump, temperature, and air content is _____
minutes.
The molding of strength test specimens shall 15
begin within ___ minutes after fabricating the
composite sample.
The concrete sample must be protected Rapid evaporation
from contamination and _.
The minimum size sample for making 28 L (1ft^3)
strength test specimens is __.
When sampling from a stationary mixer, the 2
batch must be sampled at _ or more
regularly spaced intervals during discharge
of the middle portion of the batch
The composite sample for a paving mixer 5
must represent a minimum of ___ different
portions of the batch of concrete taken from
the pile after discharge.
When sampling from a revolving drum truck 2
mixer, concrete must be sampled at a
minimum of __ regularly spaced intervals
during discharge of the middle portion of
this batch.
Concrete samples from a truck mixer must False
be obtained before any water or admixtures
are added to the mixer at the job site. True or
False?
ACI Concrete Field Testing Technician- Grade I
2/7
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