ACI Written Exam Questions with Correct Answers// Verified A
+ Edition.
Formula for relative yield actual yield/ design yield
Formula for air content (%) Theoretic-Actual/ Theoretic * 100
Maximum amount of time between 15
obtaining the first and final
samples of concrete can be no
more than _________
minutes.
The minimum size sample for 1 ft3
making strength specimens is
_______
When sampling from a stationary 2
mixer, the batch must be
sampled at a minimum of
_____portions during the middle
of the
batch
The thermometer must be 3 inches
submerged
_____into the concrete. (ASTM
1064)
ASTM 1064 can be performed True
using a wheelbarrow.
What must be done to the sample Dampen it.
container before sampling the
concrete? (ASTM 1064/ C172)
How long must the thermometer 2-5 mins
be
submerged in the concrete for?
(C1064)
The temperature must be 1 degree F
recorded to the nearest
________degree?
, The sample used for temperature False, the sample should not be rodded before taking temp
must be rodded 25 times before
the test is
performed? (C1064)
If there is a void around the Used a gloved finger to pack the concrete around the
thermometer after being thermometer to avoid the reading being affected by outside
submerged into the concrete, temperatures.
what must be done next?
(C1064)
The mold for the test is in the Cone
shape of a
____. (C143)
The height of the slump cone is 12 inches
________________________.
(C143)
The slump mold is filled in how 3
many equal layers?(C143)
How many times does each 25
layer need to be rodded?
(C143)
How deep should the tamping 1 inch into the previous layer
rod penetrate into each layer?
(C143)
How much time is allotted for 5 +/- 2 secs (3-7 secs)
lifting the slump mode?
(C143)
When rodding the top layer, You must add more concrete until there is excess.
the concrete level falls below
the rim of the top of the
slump mold, what happens
next?(C143)
After rodding, the sides of the False, no mallet is needed during the slump test.
slump mode should be hit 10-15
times with a mallet. (C143)
+ Edition.
Formula for relative yield actual yield/ design yield
Formula for air content (%) Theoretic-Actual/ Theoretic * 100
Maximum amount of time between 15
obtaining the first and final
samples of concrete can be no
more than _________
minutes.
The minimum size sample for 1 ft3
making strength specimens is
_______
When sampling from a stationary 2
mixer, the batch must be
sampled at a minimum of
_____portions during the middle
of the
batch
The thermometer must be 3 inches
submerged
_____into the concrete. (ASTM
1064)
ASTM 1064 can be performed True
using a wheelbarrow.
What must be done to the sample Dampen it.
container before sampling the
concrete? (ASTM 1064/ C172)
How long must the thermometer 2-5 mins
be
submerged in the concrete for?
(C1064)
The temperature must be 1 degree F
recorded to the nearest
________degree?
, The sample used for temperature False, the sample should not be rodded before taking temp
must be rodded 25 times before
the test is
performed? (C1064)
If there is a void around the Used a gloved finger to pack the concrete around the
thermometer after being thermometer to avoid the reading being affected by outside
submerged into the concrete, temperatures.
what must be done next?
(C1064)
The mold for the test is in the Cone
shape of a
____. (C143)
The height of the slump cone is 12 inches
________________________.
(C143)
The slump mold is filled in how 3
many equal layers?(C143)
How many times does each 25
layer need to be rodded?
(C143)
How deep should the tamping 1 inch into the previous layer
rod penetrate into each layer?
(C143)
How much time is allotted for 5 +/- 2 secs (3-7 secs)
lifting the slump mode?
(C143)
When rodding the top layer, You must add more concrete until there is excess.
the concrete level falls below
the rim of the top of the
slump mold, what happens
next?(C143)
After rodding, the sides of the False, no mallet is needed during the slump test.
slump mode should be hit 10-15
times with a mallet. (C143)
