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ACI Written Exam|133 Complete Questions and Answers
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ACI Written Exam|133 CompleteQuestions and Answers
The sensor of the temperature measureing device shall be submerged a
minimum of ____ in - -3 (75mm)
-The temperature measureing device shall have a capacity of measuring
temperature of freshly mixed conrcrete to +-_____ degrees F throught a
range of _____ - -1(.5 degrees C), 30-120 (0-50 degrees C)
-The temperature measuring device shall be calibrated____, or whenever
there is a question of _____ - -annually, accuracy
-The temp of concrete may be measured in a wheelbarrow - -true
-the temp of concrete may be measured in a wall form - -true
-A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temp. - -false
-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 temp measuring device
after the device has submerged - -Press concrete around measuring device
-How long must the temp device remain in the concrete - -at least 2
minutes (but no more than 5)
-After temp of concrete is read, what then is required - -reporting of temp
-the temp of concrete to be measured to the nearest ____degree F - -1 (.5
degree C)
-According to the ASTM C1064 what is one reason to take the temp of
concrete - -verify conformance to a specified requirement for temp
-A max temp of concrete is specified in ASTM C1064 - -False
-The sample of concrete used for temp determination must be rodded 25
times - -False
-Sampling by this method is required when tests are to be made to
determine ____ with specification requirements - -compliance
, -The method covers sampling from four types of mixers which are _____,
_____, ____, and _______ - -stationary mixes, 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
-The maximum elapsed time allowed between obtaining the final portion of
the composite sample and beginning the tests for slump, temp, 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 test specimen is - -28 L (1ft^3)
-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
-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 - -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 - -2
-Concrete samples from a truck mixer must be obtained before any water or
admixtures are added to the mixer at the job site - -False
-The composite sample from a truck mixer must be obtained from the _____
portion of the batch - -Middle
-When the concrete contains aggregate larger than permitted for a
particular test method, the sample fo concrete must be ______ ______ before
making the test - -Wet Sieved
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