Standard Test Method for
Air Content of Freshly Mixed Concrete by the Pressure
Method1
This trendy is issued underneath the constant designation c 231; the wide variety immediately following the designation shows the 12 months of
authentic adoption or, inside the case of revision, the year of ultimate revision. a variety of in parentheses suggests the year of final reapproval. a
superscript epsilon (e) indicates a piece of writing alternate since the final revision or reapproval.
This trendy has been accepted to be used by using organizations of the branch of defense.
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