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ACI Exam/26 Questions with 100% Accurate Answers
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ACI Exam/26 Questions with 100% Accurate Answers
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ACI Exam/26 Questions with 100%Accurate Answers
is based on the nominal maximum size (NMS) of the coarse aggregate. - -
The size of the Measure, used in determining the density of fresh concrete,
-False - -It is permissible to use the bowl from the volumetric air meter to
determine the density of fresh concrete when the nominal maximum
aggregate size is 1 inch or less.
-either a tamping rod or vibrator. - -The appropriate method of
consolidation, when the slump of the fresh concrete is between 1 and 3
inches, is to use
-penetrate the underlying layer about 1 inch. - -When rodding the second
and third layers of concrete in the Measure, the rod should
-2 - -When a vibrator is used to consolidate the concrete in the Measure, fill
the Measure in _____ equal layers.
-True - -Upon completion of the consolidation process, it is optimal to have
approximately 1/8 inch of excess concrete above the rim of the Measure.
-True - -It is permissible to add a small quantity of representative concrete
to the Measure to correct a deficiency.
-only the strike-off plate. - -To insure that the Measure is level full with
concrete, strike-off the top surface of the concrete using
-the mass and volume of the filled Measure, as well as the mass of the
Measure when empty. - -In order to determine the density of fresh concrete,
it is necessary to determine
-volume of concrete produced per batch. - -Yield represents the
-A = [T - D] / T x100 - -The gravimetric air content of a mixture is computed
using the following equation, where T is the theoretical density and D is the
measured density of a mixture.
-False - -After consolidating a layer by vibration, tap the outside of the
Measure 10 to 15 times with the mallet.
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