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    Chapter 10—Air Content and Unit Weight

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    Tests for air content and unit weight of freshly mixed concrete are made frequently both in the field and in the laboratory. Procedures are outlined in various ASTM standards which are straightforward and well within the capabilities for performance and understanding of the average concrete technician. Further, a minimum of training is required before proficiency in the testing technique is acquired. Nevertheless, an understanding of the limitations of the various methods, together with an appreciation for carefully following details of the procedures, is essential to obtaining and interpreting results.

    Author Information:

    Bartel, FF
    President, Tews Lime and Cement Co., Milwaukee, Wis.

    Committee/Subcommittee: C09.23

    DOI: 10.1520/STP35610S