ASTM D6931 - 17

    Standard Test Method for Indirect Tensile (IDT) Strength of Asphalt Mixtures

    Active Standard ASTM D6931 | Developed by Subcommittee: D04.26

    Book of Standards Volume: 04.03


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    Significance and Use

    4.1 The values of IDT strength may be used to evaluate the relative quality of asphalt mixtures in conjunction with laboratory mix design testing and for estimating the potential for rutting or cracking. The results can also be used to determine the potential for field pavement moisture damage when results are obtained on both moisture-conditioned and unconditioned specimens.

    Note 1: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.

    1. Scope

    1.1 This test method covers procedures for preparing and testing laboratory-fabricated or field-recovered cores of asphalt mixtures to determine the indirect tensile (IDT) strength.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

    1.4 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

    D1074 Test Method for Compressive Strength of Bituminous Mixtures

    D1561 Practice for Preparation of Bituminous Mixture Test Specimens by Means of California Kneading Compactor

    D3387 Test Method for Compaction and Shear Properties of Bituminous Mixtures by Means of the U.S. Corps of Engineers Gyratory Testing Machine (GTM)

    D3496 Practice for Preparation of Bituminous Mixture Specimens for Dynamic Modulus Testing

    D3549 Test Method for Thickness or Height of Compacted Bituminous Paving Mixture Specimens

    D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials

    D4013 Practice for Preparation of Test Specimens of Bituminous Mixtures by Means of Gyratory Shear Compactor

    D4867/D4867M Test Method for Effect of Moisture on Asphalt Concrete Paving Mixtures

    D5581 Test Method for Resistance to Plastic Flow of Bituminous Mixtures Using Marshall Apparatus (6 inch-Diameter Specimen)

    D6925 Test Method for Preparation and Determination of the Relative Density of Hot Mix Asphalt (HMA) Specimens by Means of the Superpave Gyratory Compactor

    D6926 Practice for Preparation of Bituminous Specimens Using Marshall Apparatus

    D6927 Test Method for Marshall Stability and Flow of Bituminous Mixtures

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    AASHTO Standards

    AASHTO T312 Standard Method for Preparing and Determining the Density of Hot Mix Asphalt (HMA) Specimens by Means of the Superpave Gyratory Compactor


    ICS Code

    ICS Number Code 93.080.20 (Road construction materials)

    UNSPSC Code

    UNSPSC Code 30121500(Bituminous derivatives)


    Referencing This Standard
    Link Here
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    DOI: 10.1520/D6931-17

    Citation Format

    ASTM D6931-17, Standard Test Method for Indirect Tensile (IDT) Strength of Asphalt Mixtures, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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