ASTM D2172 PDF

Full Description 1. Aggregate obtained by these methods may be used for sieve analysis using Test Method D This test is not appropriate for testing asphalt mixtures containing coal tar. 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.

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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense. Scope 1. Aggregate extracted from a paving mixture may be used for sieve analysis using Test Method D 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. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. N OTE 1—The results obtained by these test methods may be affected by the age of the material tested, with older samples tending to yield slightly lower bitumen content. Best quantitative results are obtained when the test is made on mixtures and pavements shortly after their preparation.

It is difficult to remove all the asphalt when some aggregates are used and some chlorides may remain within the mineral matter affecting the measured asphalt content. Current edition approved Feb. Published March Originally approved in Last previous edition approved in as D — DOI: Summary of Test Methods 3. The bitumen content is calculated by difference from the mass of the extracted aggregate, moisture content, and mineral matter in the extract.

The bitumen content is expressed as mass percent of moisture-free mixtures. Each method prescribes the solvent or solvents and any other reagents that can be used in 3 Withdrawn. The last approved version of this historical standard is referenced on www. Test Method D requires that Method A be used when asphalt is recovered from solution.

N OTE 2—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.

Users of this standard are cautioned that compliance with Practice D alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of Practice D or some similar acceptable guideline provides a means of evaluating and controlling some of those factors. Apparatus 5. Optional small-mouth graduate, mL capacity. Reagents 6. Caution —see Section 7. Hazards 7. Pharmacopeial Convention, Inc.

Committee of the American Conference of Governmental Industrial Hygienists 6 for the current threshold limit values. Sampling 8. Split or quarter the material until the mass of material required for test is obtained.

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ASTM-D2172

More D Each method prescribes the solvent or solvents and any other reagents that can be used in the test method. When recovering the asphalt binder for property testing, all mineral matter should be removed from the effluent. Users of this standard are cautioned that compliance with Specification D alone does not completely ensure reliable results.

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More D Agencies that meet the criteria of Specification D are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D or some similar acceptable guideline provides a means of evaluating and controlling some of those factors. Scope 1.

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ASTM D2172

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