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ASTM D4125/D4125M-21

Current Revision

Standard Test Methods for Asphalt Content of Bituminous Mixtures by the Nuclear Method

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1.1 These test methods cover the procedures for determining the asphalt content of samples of uncompacted asphalt mixtures (Test Method A), and of laboratory compacted specimens of asphalt mixtures (Test Method B) by examining a test sample with an apparatus that utilizes neutron thermalization techniques.

1.2 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 nonconformance with the standard.

1.3 A precision and bias statement for Method B in this standard has not been developed at this time. Therefore, Method B should not be used for acceptance or rejection of a material for purchasing purposes.

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. See Section 6 and 8.4.2, 8.5.6, and Note 4 for specific hazards.

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.


3.1 These test methods are useful as a rapid, nondestructive technique for determination of asphalt content of asphalt mixtures.

3.2 These test methods are suitable for quality control and acceptance testing for construction and for research and development applications. The test method is used for determination of asphalt content only as it does not provide extracted aggregate for gradation analysis.

3.3 The nondestructive nature of the test allows repetitive measurements to be made on a single test sample for statistical analysis of test data.

3.4 These test methods determine the asphalt content of a test sample by comparing the measured asphalt content with previously established calibration data.

3.4.1 The asphalt content of a material expressed as a percentage is the ratio of the mass of asphalt in a given mass of material to the total mass of the sample or to the mass of the solid material particles.

SDO ASTM: ASTM International
Document Number D4125
Publication Date April 1, 2021
Language en - English
Page Count 5
Revision Level 21
Supercedes
Committee D04.25
Publish Date Document Id Type View
April 1, 2021 D4125_D4125M-21 Revision
Dec. 1, 2010 D4125_D4125M-10 Revision
Oct. 1, 2016 D4125_D4125M-10R16 Reaffirmation