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The pressure method of determining air content can be used on concrete containing ....... aggregate
Relatively dense
The pressure method of determining air content cannot be used on concrete containing the following types of aggregate:.......
Lightweight, aggregate of high porosity, air-cooled blast furnace slag
What is the minimum allowable capacity of the measuring bowl used in this test method
6L
What is the specified size of the mallet required for this test method when the measuring bowl has a capacity of 14L or less?
1.25+-0.5lb
The sample of concrete used for this test is to be obtained in accordance with what ASTM practice?
C172/C172M
The maximum size aggregate allowed for this test method is ...
2in
If the concrete contains aggregate larger than the maximum allowed for this test, the sample must be ....
Wet sieved over 1-1/2 in sieve
After rodding each layer what should be done to the measure before adding another layer of concrete
Tap the sides of the measure smartly 10-15 times with the mallet
What tools may be used to strike off the top surface of the concrete following consolidation of the final layer
A strike off bar, a metal glass, or acrylic plate
After consolidation of the concrete, strike off the top surface by .....the ..... ...... ..... Across the top flange or rim of the measuring bowl with a sawing motion until the bowl is just level full
Sliding, strike off bar
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