ASTM D6931-17 - 1.7.2017
 
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

D3387-11

Standard Test Method for Compaction and Shear Properties of Bituminous Mixtures by Means of the U.S. Corps of Engineers Gyratory Testing Machine (GTM) (Withdrawn 2020)

D3496-99

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

D3549-03

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

D3666-26

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

D4013-09

Standard Practice for Preparation of Test Specimens of Bituminous Mixtures by Means of Gyratory Shear Compactor (Withdrawn 2013)

E1-14(2025)

Standard Specification for ASTM Liquid-in-Glass Thermometers

AASHTO T312

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

D6925-23

Standard Test Method for Preparation and Determination of the Relative Density of Asphalt Mix Specimens by Means of the Superpave Gyratory Compactor

D6926-20

Standard Practice for Preparation of Asphalt Mixture Specimens Using Marshall Apparatus

D6927-22

Standard Test Method for Marshall Stability and Flow of Asphalt Mixtures

D4867/D4867M-26

Standard Test Method for Effect of Moisture on Asphalt Mixtures

D5581-25

Standard Test Method for Resistance to Plastic Flow of Asphalt Mixtures Using Marshall Apparatus (6 in. Diameter Specimen)

D1074-17

Standard Test Method for Compressive Strength of Asphalt Mixtures (Withdrawn 2026)

D1561-92(2000)

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