ACI –CONCRETE FILED –TESTING CERTIFICATION -
IRVING TEST BANK EXAM 2025-2026 \COMPLETE 250
QUESTIONS AND CORRECT DETAILED ANSWERS
\VERIFIED ANSWERS \ALREADY GRADED A+
Test includes: ASTM C 1064 Standard Test Method for Temperature of Freshly Mixed
Hydraulic - Cement Concrete ASTM C172 Standard Test Method for Sampling Freshly
Mixed Concrete ASTM C143 Standard Test Method for Slump of Hydraulic- Cement
Concrete ASTM C138 Standard Test Method for Density (Unit Weight) Yield of
Concrete ASTM C231 Standard Test Method for Air Content of Freshly Mixed Concrete
(Pressure Method) ASTM C173 Standard Test Method for Air Content of Freshly
Mixed Concrete (Volumetric Me…
If the concrete contains False (wet screened)
aggregates larger than those
that are appropriate for a size
of mold or equipment used,
the sample
should be wet-sieved before
making the test. (T or F)
The composite sample not False
be remixed before
beginning any tests. (T or
F)
Sampling should normally True
be performed, as the
concrete is discharged
from the
mixer. (T or F)
ASTM Method C172 includes True
the sampling from stationary
mixers, paving mixers, truck
mixers, agitators, and non-
agitating
equipment. (T or F)
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After sampling is completed, None of the above (5 mins)
start the tests for slump
and air content within:
In any case, do not obtain All the water and admixtures have been added to the concrete
samples until:
No samples shall be taken before or
after _ of the batch has been
discharged.
When strength tests are to 1 cubic foot
be made, the minimum
size of the composite
sample shall be:
Sample the concrete from the chute of a
truck mixer by:
Fresh concrete to be tested at Two or more regularly spaced intervals during
the job site should be discharge of the middle portion of the batch
sampled from:
The elapsed time between None of the above
obtaining the first and final
portions of the composite
sample, according to ASTM
C172, shall not exceed:
The sides of the slump cone False
should be
tapped with the mallet to
consolidate the concrete in
the mold. (T or F)
For the slump test, when True
Rodding the
second layer and the top
layer, the tamping rod should
just penetrate into the
underlying layer. (T or F)
According to ASTM C143, it True
is permissible to use a
mold, which clamps to a
non-
absorbent base. (T or F)
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When filling the final layer False
of the slump cone, never
heap the concrete above the
top of the mold. (T or F)
The filling of the slump False
cone should be done in
three layers of equal height.
(T or F)
The slump test may be done False
on any flat surface. (T or F)
When filling the slump cone, True
each layer should be
rodded 25 times. (T or F)
The slump cone is filled in True
three layers of equal
volume. (T or F)
Concrete should be True
removed from around the
base before the cone is
lifted. (T or F)
The slump cone should be 3 to 7
raised carefully, vertically
upward, in a steady motion
in
_ _ Seconds
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The elapsed time between the 2 1/2 minutes
start of
filling the slump cone and
the removal of the cone
must be no more than:
The slump should be Quarter of an inch
measured to the nearest
In order to determine slump, Top of the mold to the displaced original center of the top
you should measure the surface
vertical distance from:
The dimensions of the slump Top diameter 4 inches, bottom diameter 8 inches, height 12 inches
cone are:
In the slump test, if a Disregard the test and make a new test on another portion of the
decided falling away or sample
shearing off the concrete
from one side or portion of
the mass occurs upon
raising the slump cone,
one should:
The slump cone should be The tamping rod
struck-off with:
The slump cone must be On a flat moist, non-absorbent, rigid surface
placed:
When rodding the second True
and third layers, the rod
should penetrate the
preceding layer by about 1
inch. (T or F)
The normal ½ cubic foot False (0.2 bucket)
bucket may not be used to
determine Density (unit
weight) of lightweight
concrete. (T or F)
Concrete slump of less than True
1 inch should be
consolidated using a
vibrator. (T or F)
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