ACI Written Exam 2023-2024 /133 Questions And
Answers 100% Score!!!
Quiz :The sensor of the temperature measuring device shall be submerged a
minimum of ____ in - Answer :3 (75mm)
Quiz :The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +-_____ degrees F thought a range
of _____ - Answer :1(.5 degrees C), 30-120 (0-50 degrees C)
Quiz :The temperature measuring device shall be calibrated____, or whenever
there is a question of _____ - Answer :annually, accuracy
Quiz :The temp of concrete may be measured in a wheelbarrow -
Answer :true
Quiz :the temp of concrete may be measured in a wall form - Answer :true
Quiz :A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temp. - Answer :false
Quiz :What must be done to the sample container prior to sampling the
concrete - Answer :dampen (with water)
Quiz :what must be done to the concrete surrounding the temp measuring
device after the device has submerged - Answer :Press concrete around
measuring device
Quiz :How long must the temp device remain in the concrete - Answer :at
least 2 minutes (but no more than 5)
Quiz :After temp of concrete is read, what then is required -
Answer :reporting of temp
Quiz :the temp of concrete to be measured to the nearest ____degree F -
Answer :1 (.5 degree C)
Quiz :According to the ASTM C1064 what is one reason to take the temp of
concrete - Answer :verify conformance to a specified requirement for temp
, Quiz :A max temp of concrete is specified in ASTM C1064 - Answer :False
Quiz :The sample of concrete used for temp determination must be rodded 25
times - Answer :False
Quiz :Sampling by this method is required when tests are to be made to
determine ____ with specification requirements - Answer :compliance
Quiz :The method covers sampling from four types of mixers which are _____,
_____, ____, and _______ - Answer :stationary mixes, paving mixers, revolving
drum mixers and open top mixers
Quiz :The maximum allowable time between obtaining the first and final
portions of a composite sample is ______ minutes - Answer :15
Quiz :Portions of a composite sample shall be thoroughly remixed before
beginning tests on the sample - Answer :True
Quiz :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 - Answer :5
Quiz :the molding of strength test specimens shall begin within ____ minutes
after fabricating the composite sample - Answer :15
Quiz :The concrete sample must be protected from contamination and ____ -
Answer :rapid evaporation
Quiz :The minimum size sample test specimen is - Answer :28 L (1ft^3)
Quiz :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
Quiz :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
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