ACI Written Exam Questions with Correct Answers// Verified A
+ Edition.
C
Terms in this set (60)
The method of determining false
air content of concrete
containing lightweight aggregate
is the pressure method
True or False?
When making a test cylinder True
from concrete being used in
construction, the field technician
must also measure the slump of
the concrete.
True or False?
While the technician is C. Disregard the test and retest on another portion of the sample
checking the slump of the
concrete, there is a decided
falling away or shearing off of
concrete from one side of the
sample. What should the
technician do?
A. Measure the slump
directly over the center of
the original base of the mold
B. Measure the slump at the
average distance above
the original center
C. Disregard the test and retest
on another portion of the
sample
D. None of the above
, Preparation of specimens for A. Determination that at least 8h has elapsed since final set
transport includes:
A. Determination that at
least 8 h has elapsed since
final set
8. Ensuring specimens
have not been demolded
C. Allowing the specimen to air
dry for at least 4 h
If the aggregate correction C. 4.8%
factor for a given source of fine
and coarseaggregate is found to
be 0.2% in a pressure air
meter, and an air contentvalue
of 5.0% is read on the gage of
the same air meter containing
concretewith the same
aggregate, what is the correct
air content?
A. 3.0%
B. 5.2%
C. 4.8%
D. 0.4%
Strength test specimens E. A,B, and C
transported from the field to
the testing laboratory must
be:
A. Protected from jarring
B. Protected from moisture loss
C. Protected from freezing
D.A and B only
E. A, B, and C
Tests for slump and air A. 5 min
content must be started
within________after
obtaining the
final portion of the composite
sample
+ Edition.
C
Terms in this set (60)
The method of determining false
air content of concrete
containing lightweight aggregate
is the pressure method
True or False?
When making a test cylinder True
from concrete being used in
construction, the field technician
must also measure the slump of
the concrete.
True or False?
While the technician is C. Disregard the test and retest on another portion of the sample
checking the slump of the
concrete, there is a decided
falling away or shearing off of
concrete from one side of the
sample. What should the
technician do?
A. Measure the slump
directly over the center of
the original base of the mold
B. Measure the slump at the
average distance above
the original center
C. Disregard the test and retest
on another portion of the
sample
D. None of the above
, Preparation of specimens for A. Determination that at least 8h has elapsed since final set
transport includes:
A. Determination that at
least 8 h has elapsed since
final set
8. Ensuring specimens
have not been demolded
C. Allowing the specimen to air
dry for at least 4 h
If the aggregate correction C. 4.8%
factor for a given source of fine
and coarseaggregate is found to
be 0.2% in a pressure air
meter, and an air contentvalue
of 5.0% is read on the gage of
the same air meter containing
concretewith the same
aggregate, what is the correct
air content?
A. 3.0%
B. 5.2%
C. 4.8%
D. 0.4%
Strength test specimens E. A,B, and C
transported from the field to
the testing laboratory must
be:
A. Protected from jarring
B. Protected from moisture loss
C. Protected from freezing
D.A and B only
E. A, B, and C
Tests for slump and air A. 5 min
content must be started
within________after
obtaining the
final portion of the composite
sample
