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ACI WRITTEN TEST EXAM 2024 ACTUAL EXAM COMPLETE 200+ QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) / ALREADY GRADED A+$17.99
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ACI WRITTEN TEST EXAM 2024 ACTUAL EXAM
COMPLETE 200+ QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS) /
ALREADY GRADED A+
The sensor of the temperature measureing device shall be submerged a minimum of
____ in - ANSWER3 (75mm)
The temperature measureing device shall have a capacity of measuring temperature of
freshly mixed conrcrete to +-_____ degrees F throught a range of _____ - ANSWER1(.5
degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is a
question of _____ - ANSWERannually, accuracy
The temp of concrete may be measured in a wheelbarrow - ANSWERtrue
the temp of concrete may be measured in a wall form - ANSWERtrue
A composite sample of concrete is required even if the only purpose for obtaining the
sample is to determine temp. - ANSWERfalse
What must be done to the sample container prior to sampling the concrete -
ANSWERdampen (with water)
what must be done to the concrete surrounding the temp measuring device after the
device has submerged - ANSWERPress concrete around measuring device
How long must the temp device remain in the concrete - ANSWERat least 2 minutes
(but no more than 5)
After temp of concrete is read, what then is required - ANSWERreporting of temp
the temp of concrete to be measured to the nearest ____degree F - ANSWER1 (.5
degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete -
ANSWERverify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 - ANSWERFalse
The sample of concrete used for temp determination must be rodded 25 times -
ANSWERFalse
,Sampling by this method is required when tests are to be made to determine ____ with
specification requirements - ANSWERcompliance
The method covers sampling from four types of mixers which are _____, _____, ____,
and _______ - ANSWERstationary 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 - ANSWER15
Portions of a composite sample shall be thoroughly remixed before beginning tests on
the sample - ANSWERTrue
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 - ANSWER5
the molding of strength test specimens shall begin within ____ minutes after fabricating
the composite sample - ANSWER15
The concrete sample must be protected from contamination and ____ - ANSWERrapid
evaporation
The minimum size sample test specimen is - ANSWER28 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 -
ANSWER2
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 - ANSWER5
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 - ANSWER2
Concrete samples from a truck mixer must be obtained before any water or admixtures
are added to the mixer at the job site - ANSWERFalse
The composite sample from a truck mixer must be obtained from the _____ portion of
the batch - ANSWERMiddle
When the concrete contains aggregate larger than permitted for a particular test
method, the sample fo concrete must be ______ ______ before making the test -
ANSWERWet Sieved
, The slump test is applicable to plastic concrete with a max aggregate size of ____ in -
ANSWER1.5 in (37.5 mm)
When concrete contains aggregate larger than allowed for the slump test the large
aggregate must be - ANSWERremoved by wet sieving the sample over 1.5 in sieve
The mold for making the slump test is the shape of - ANSWERthe frustum of a cone
The height fo the slump mold is _____ in - ANSWER12
The interior surface of the slump mold is allowed to have minor irregularities -
ANSWERfalse
For use in the slump test, the end or both ends of the tamping rod must be -
ANSWERrounded
the sample of concrete for use in making the slump test must be obtained in accordance
with ASTM standard ________ - ANSWERC172 (Standard Practice for sampling freshly
mixed concrete
The slump mold should be in a dry condition before the beginning of the test -
ANSWERfalse
the surface on which the slump mold will be placed must be _____ - ANSWERflat, level
moist, nonabsorbent, free of vibration
The slump mold is filled in ____ layers - ANSWER3
Each layer should fill approx ____ volume of the mold - ANSWEROne third
The approx conrete depth after placing the first layer is ____, and ____ after the second
- ANSWER2 and 5/8 in (70mm), 6.125 in (160 mm)
what is the specified number of rodding for each layer - ANSWER25
How deep should the tamping rodd penetrate each layer - ANSWER1st layer all the way
then one inch into previous layer
What must be done if the concrete drops below the top of the slump mold while the top
layer is being rodded - ANSWERadd additional concrete
Prior to lifting the mold, concrete must be removed from ______ - ANSWERthe area
surrounding base of the mold
After final rodding the sides of the mold should be tapped lightly - ANSWERFalse
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