ASTM WK38472(What is a Work Item? / How to Input to a Work Item)Work Item: ASTM WK38472 - Revision of C138 / C138M - 12 Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of ConcreteActive Standard: C138 / C138M - 13 Developed by Subcommittee: C09.60 | Committee C09 Home | Contact Staff Manager
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