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    ASTM C140 / C140M - 21

    Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

    Active Standard ASTM C140 / C140M | Developed by Subcommittee: C15.03

    Book of Standards Volume: 04.05

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    Significance and Use

    4.1 These test methods provide general testing requirements for application to a broad range of concrete products. Those general testing requirements are included in the body of this standard.

    Note 2: Consult manufacturer, supplier, product specifications, or other resources for more specific measurement or testing guidelines for those products not addressed with the annex of this standard.

    4.2 These test methods provide specific testing requirements in two distinct sections, the requirements applicable to all units covered by these test methods and those applicable to the specific unit types. The requirements applicable to all units are included in the body of these test methods and those applicable to the specific unit types are included within the annexes.

    1. Scope

    1.1 These test methods provide various testing procedures commonly used for evaluating characteristics of concrete masonry units and related concrete units. Methods are provided for sampling, measurement of dimensions, compressive strength, absorption, unit weight (density), moisture content, flexural load, and ballast weight. Not all methods are applicable to all unit types, however.

    1.2 Specific testing and reporting procedures are included in annexes to these test methods for the following specific unit types:

    Annex A1—Concrete masonry units
      (Specifications C90, C129)

    Annex A2—Concrete and calcium silicate brick
      (Specifications C55, C73, C1634)

    Annex A3—Segmental retaining wall units (Specification C1372)

    Annex A4—Concrete interlocking paving units
      (Specification C936/C936M)

    Annex A5—Concrete grid paving units (Specification C1319)

    Annex A6—Concrete roof pavers
      (Specification C1491)

    Annex A7—Dry-cast articulating concrete block
     (Specification D6684)

    Annex A8—Segmental Concrete Paving Slabs
     (Specification C1782/C1782M)

    1.3 The test procedures included in these test methods are also applicable to other types of units not referenced in these test methods, but specific testing and reporting requirements for those units are not included.

    1.4 These test methods include the following sections:





    Referenced Documents     




    Significance and Use      




    Measurement of Dimensions   


    Compressive Strength     










    Annexes—Test Procedures


    Concrete Masonry Units     

    Annex A1

    Concrete and Calcium Silicate Brick 

    Annex A2

    Segmental Retaining
     Wall Units  

    Annex A3

    Concrete Interlocking Paving Units

    Annex A4

    Concrete Grid Paving

    Annex A5

    Concrete Roof Pavers      

    Annex A6

    Dry-Cast Articulating
      Concrete Block

    Annex A7

    Segmental Concrete Paving Slabs

    Annex A8

    Worksheet and Test Report for
     Concrete Masonry Units    

    Appendix X1

    Note 1: The testing laboratory performing these test methods should be evaluated in accordance with Practice C1093.

    1.5 The text of this test method references 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.

    1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.7 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.

    1.8 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

    C55 Specification for Concrete Building Brick

    C73 Specification for Calcium Silicate Brick (Sand-Lime Brick)

    C90 Specification for Loadbearing Concrete Masonry Units

    C129 Specification for Nonloadbearing Concrete Masonry Units

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

    C936/C936M Specification for Solid Concrete Interlocking Paving Units

    C1093 Practice for Accreditation of Testing Agencies for Masonry

    C1232 Terminology for Masonry

    C1319 Specification for Concrete Grid Paving Units

    C1372 Specification for Dry-Cast Segmental Retaining Wall Units

    C1491 Specification for Concrete Roof Pavers

    C1552 Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing

    C1634 Specification for Concrete Facing Brick and Other Concrete Masonry Facing Units

    C1716/C1716M Specification for Compression Testing Machine Requirements for Concrete Masonry Units, Related Units, and Prisms

    C1782/C1782M Specification for Segmental Concrete Paving Slabs

    D1056 Specification for Flexible Cellular MaterialsSponge or Expanded Rubber

    D6684 Specification for Materials and Manufacture of Articulating Concrete Block (ACB) Systems

    E4 Practices for Force Verification of Testing Machines

    E6 Terminology Relating to Methods of Mechanical Testing

    Other Documents

    SP960-12 NIST Recommended Practice Guide Stopwatch and Timer Calibration Available at http://tf.nist.gov/general/pdf/2281.pdf

    ICS Code

    ICS Number Code 91.100.30 (Concrete and concrete products)

    UNSPSC Code

    UNSPSC Code 30111500(Concrete and mortars)

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

    DOI: 10.1520/C0140_C0140M-21

    Citation Format

    ASTM C140 / C140M-21, Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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