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ASTM C173 - Air Content of Freshly Mixed Concrete by the Volumetric Method Questions and Answers 100% Solved
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ASTM C173 - Air Content of Freshly Mixed Concrete by the Volumetric Method
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ASTM C173 - Air Content of Freshly Mixed Concrete by the Volumetric MethodASTM ____ - Air Content of Freshly Mixed Concrete by the Volumetric Method - answer
C173
The volumetric method of determining air content can be used on freshly mixed concrete containing ____ . - answer any type of aggregate, wheather it be dense, cellular, or lightweight.
The Volumetric Method measures the air content in the ____ , but is not affected by air that may be present ____ . - answer mortor fraction of the concrete ; inside porous aggregate particles
If more foam is present than equivalent to ____ , the test is declared ____ and must be ____ using a larger ____ . (Volumetric Method) - answer 2% air above the water level ; invalid ; repeated ; quantity of alcohol
Addition of alcohol to dispel foam after the intial filling of the meter is permitted. T/F (Volumetric Method) - answer False ; after the intial adding of alcohol to the meter no
more alcohol is permitted.
What are the requirements for the tamping rod used in this test method? - answer Round, smooth, straight steel, high-density polyethylene, or other plastic rod 5/8" ±1/16". Length 4 inches greater than the depth of the measuring bowl but not greater than 24 inches.
What are the requirements for the strike-off bar used in the test method? - answer Flat, straight steel bar at least 1/8" x 3/4" x 12", or a flat, straight high-density polyethylene bar, or other plastic of equal or greater abrasion resistance, at least 1/4" x 3/4" x 12".
What is the approximate volume of the measuring cup used to add water to the air meter, in relation to the volume of the air meter bowl? - answer 1.00 ±0.04 %
The calibrated cup is only to be used to ____ exceeds ____ or the calibrated range of the meter. - answer add water when the concrete air content ; 9%
What type of alcohol and concentration must be used in this test method? - answer Isopropyl , 70% by volume 65% by weight
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