Research Report Approved: Jan 01, 2023
RR:C09-2001

C0457/C0457M-Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete

The precision of this test method is based on an interlaboratory study of ASTM C0457/C0457M, Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete, conducted in 2018. Each of 31 volunteer laboratories were asked to test 2 materials for 7 different parameters. Every “test result” represents an individual determination, and all participants were instructed to report two replicate test results for each material. Practice E691 was followed for the design and analysis of the data; the details are given in ASTM Research Report No. C09-2001.
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Details
Developed by Subcommittee: C09.65
Stock # : RR-C09-2001
Standard: C457