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JIS A 1128 PDF
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Method of test for air content of fresh concrete by pressure method
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2019
JIS A 1128 – Method of test for air content of fresh concrete by pressure method
JIS A 1128:2019 specifies the method for determining the air content of fresh concrete through reduction of pressure in air chamber. This Standard is applicable to concrete made with ordinary aggregate of which the maximum aggregate size is 40 mm or smaller. It is not applicable to concrete made with porous aggregate such as artificial lightweight aggregate for which the aggregate correction factor cannot be accurately determined. The water-column method is provided in Annex A (informative).
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