Chapter 5 - Test Method C231/C231M -
14 Air Content of freshly mixed concrete
by the pressure method Exam Questions
and Answers with Verified Solutions |
Latest Updated 2026
The pressure method of Relatively Dense
determining air content can be
used on concrete containing
_____ aggregate
The pressure method of Lighting weight, air cooled blast
determining air content cannot furnace slag, aggregates of high
be used on concrete porosity.
containing the following types
of aggregate:
What is the minimum 6.0 L (0.20ft)
allowable capacity of the
measuring bowl used in this
test method?
What are the required Round, straight steel rod, with a 16
characteristics of the tamping MM +- 2MM diameter, length at
rod used in this test method? lease 100MM.
What is the specified size of 0.60 +- 0.25 KG (1.25 +- 0.50 Lb)
the mallet required for this
test method when the
measuring bowl has a capacity
, of 14 L (0.5 Ft3) or less?
The sample of concrete used C172
for this test is to be obtained
in accordance with what ASTM
Practice?
The maximum size aggregate 2 Inches (50MM)
allowed for this test method
is?
If concrete contains aggregate Wet sieved over a 1-1/2 Inch Sieve
larger than the maximum (37.5 MM)
allowed for this test, the
sample must be?
If the concrete sample is to be 2 Equal
consolidated by vibration, the
measure is filled in ____ Layers
if the concrete sample is to be 3 Equal
consolidated by rodding, the
measure is filled in ____ Layers
When rodding the concrete 25
sample, what is the specified
number of strokes required for
each layer?
Vibration of the concrete 3 Inch (75MM)
sample is not allowed when
the slump of concrete exceeds
_____.
14 Air Content of freshly mixed concrete
by the pressure method Exam Questions
and Answers with Verified Solutions |
Latest Updated 2026
The pressure method of Relatively Dense
determining air content can be
used on concrete containing
_____ aggregate
The pressure method of Lighting weight, air cooled blast
determining air content cannot furnace slag, aggregates of high
be used on concrete porosity.
containing the following types
of aggregate:
What is the minimum 6.0 L (0.20ft)
allowable capacity of the
measuring bowl used in this
test method?
What are the required Round, straight steel rod, with a 16
characteristics of the tamping MM +- 2MM diameter, length at
rod used in this test method? lease 100MM.
What is the specified size of 0.60 +- 0.25 KG (1.25 +- 0.50 Lb)
the mallet required for this
test method when the
measuring bowl has a capacity
, of 14 L (0.5 Ft3) or less?
The sample of concrete used C172
for this test is to be obtained
in accordance with what ASTM
Practice?
The maximum size aggregate 2 Inches (50MM)
allowed for this test method
is?
If concrete contains aggregate Wet sieved over a 1-1/2 Inch Sieve
larger than the maximum (37.5 MM)
allowed for this test, the
sample must be?
If the concrete sample is to be 2 Equal
consolidated by vibration, the
measure is filled in ____ Layers
if the concrete sample is to be 3 Equal
consolidated by rodding, the
measure is filled in ____ Layers
When rodding the concrete 25
sample, what is the specified
number of strokes required for
each layer?
Vibration of the concrete 3 Inch (75MM)
sample is not allowed when
the slump of concrete exceeds
_____.
