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Astm C 138/C 138M – 01a pdf free download

Standard Test Method for
Density (Unit Weight), Yield, and Air Content (Gravimetric)
of Concrete1

This standard is issued under the fixed designation C 138/C 138M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.

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