ASTM C1890 - 19

    Standard Test Method for K-slump of Freshly Mixed Concrete

    Active Standard ASTM C1890 | Developed by Subcommittee: C09.60

    Book of Standards Volume: 04.02


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    Significance and Use

    5.1 This test method permits a rapid assessment of the consistency of freshly mixed concrete.

    5.2 This test method can be used to provide information on the change in consistency with time of a freshly mixed concrete mixture. It is especially valuable for assessing the consistency of flowing or self-consolidating concrete mixtures.

    5.3 This test method can be used to assess batch-to-batch variations in consistency of freshly mixed concrete.

    5.4 There is no general reliable relationship between the K-slump value and slump measured in accordance with Test Method C143/C143M or slump flow measured in accordance with Test Method C1611/C1611M. However, this test method is useful as a quality control tool. For example, the user can make trial batches in the laboratory and determine the range in K-slump corresponding to an acceptable range in slump or slump flow. That range in K-slump can be used to check the consistency of field batches.

    5.5 This test method is not suitable as the basis for acceptance or rejection of concrete.

    1. Scope

    1.1 This test method covers determination the K-slump of freshly mixed concrete, both in the laboratory and in the field.

    1.2 The values stated SI units are the standard. No other units of measurement are included in this standard.

    1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field

    C125 Terminology Relating to Concrete and Concrete Aggregates

    C143/C143M Test Method for Slump of Hydraulic-Cement Concrete

    C172/C172M Practice for Sampling Freshly Mixed Concrete

    C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory

    C1611/C1611M Test Method for Slump Flow of Self-Consolidating Concrete


    ICS Code

    ICS Number Code 91.100.30 (Concrete and concrete products)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/C1890-19

    Citation Format

    ASTM C1890-19, Standard Test Method for K-slump of Freshly Mixed Concrete, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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