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CET 2343 ACI exam review(updated)questions with answers
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CET 2343 ACI exam review(updated)questions with answers
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CET 2343 ACI examreview(updated)questions with answers
The maximum allowable sampling time between obtaining the first and final portions of a composite
sample is _____ minutes - correct answer ✔✔15 minutes
Concrete samples must be obtained before any water or admixtures are added to the mixer at the job
site. - correct answer ✔✔False
When sampling from a paving mixer, obtain samples from at least ____ different portions of the pile and
combine them to not one composite sample for test purposes. - correct answer ✔✔5
When sampling from a revolving drum truck, how many portions should be collected? - correct answer
✔✔2 portions
Samples for strength should be taken before 10% or after 90% of the batch has been discharged in a
revolving drum truck. - correct answer ✔✔False
While a minimum of 1 cubic feet is required for strength testing, samples smaller than 1 cubic foot are
allowed on routine air content, temperature, and slump tests. - correct answer ✔✔True
Concrete samples must be protected from ___ and ____. - correct answer ✔✔Sun and wind
Portions for a composite sample shall be combined and thoroughly remixed before beginning tests on
the sample. - correct answer ✔✔True
After obtaining the final portion of the composite sample, the maximum allowable time before
beginning tests got slump, temperature, and air content is __ minutes - correct answer ✔✔5
, Start molding strength samples within __ mins after fabricating the composite sample. - correct answer
✔✔15
When the concrete contains aggregate larger than permitted for a particular test method, the sample of
concrete can be ________ before testing - correct answer ✔✔Wet sieved
Name the 5 types of equipment this standard covers for sampling. - correct answer ✔✔Revolving drum
truck mixer, stationary mixers, paving mixers, continuous mixers, open ended/topped truck mixers
Concrete should cover ____ inches around the temperature sensor. - correct answer ✔✔3 inches
When inserting the sensor into the sample, gently press concrete around the sensor. - correct answer
✔✔True
The temperature reading must be complete between ___ and _____ minutes - correct answer ✔✔2 and
5
Read the temperature sensor to the nearest ___ F. - correct answer ✔✔1 degree
The temperature sensor should be removed when reading it. - correct answer ✔✔False
The temperature of fresh concrete can be measured in a wheelbarrow. - correct answer ✔✔True
The temperature of fresh concrete can be measured in a wall form. - correct answer ✔✔True
A composite sample is not required to measure the temperature of fresh concrete. - correct answer
✔✔True
The temperature range for the thermometer is between ___ F to ____ F. - correct answer ✔✔30 degrees
to 120 degrees
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