ASTM D2042-22

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2042 − 15 D2042 − 22
Standard Test Method for
Solubility of Asphalt Materials in Trichloroethylene or
Toluene
This standard is issued under the fixed designation D2042; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the degree of solubility in trichloroethylene or toluene of asphalt materials having
little or no mineral matter.
NOTE 1—This method is not applicable to tars and their distillation residues or highly cracked petroleum products. For methods covering tars, pitches,
and other highly cracked petroleum products, and the use of other solvents, see Test Methods D4, D2318, and D2764.
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 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. Specific precaution statements are given in Section 7.
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.
2. Referenced Documents
2.1 ASTM Standards:
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D4 Test Method for Bitumen Content
D2318 Test Method for Quinoline-Insoluble (QI) Content of Tar and Pitch
D2764 Test Method for Dimethylformamide-Insoluble (DMF-I) Content of Tar and Pitch
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction
Materials Testing
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.47 on
Miscellaneous Asphalt Tests.
Current edition approved June 1, 2015Jan. 1, 2022. Published July 2015February 2022. Originally approved in 1966. Last previous edition approved in 20092015 as
D2042 – 09.D2042 – 15. DOI: 10.1520/D2042-15.10.1520/D2042-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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D2042 − 22
2.2 AASHTO Standard:
T44T 44 Solubility of Bituminous Materials in Organic Solvents
3. Summary of Method
3.1 The sample is dissolved in trichloroethylene or toluene solvent and filtered through a glass fiber pad. The insoluble material
is washed, dried, and weighed.
4. Significance and Use
4.1 This test method is a measure of the solubility of asphalt in trichloroethylene. trichloroethylene or toluene solvent. The portion
that is soluble in trichloroethylene the solvent represents the active cementing constituents.
NOTE 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. Agencies that meet the criteria of Specification D3666 are generally considered capable
of competent and objective testing/sampling/inspection/etc. testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with
Specification D3666 alone does not completely assureensure 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 these factors.
5. Apparatus and Materials
5.1 The assembly of a typical filtering apparatus is illustrated in Fig. 1. Details of the component parts are as follows:
FIG. 1 Filtering Apparatus Assembly
Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
http://www.transportation.org.
D2042 − 22
5.1.1 BitumenAsphalt Crucible or Gooch Crucible, glazed inside and outside with the exception of outside bottom surface. The
approximate dimensions shall be a diameter of 44 mm at the top, tapering to 36 mm at the bottom, and a depth of 20-30 mm.20
to 30 mm.
5.1.2 Glass Microfiber Filter Pad, 32–34 32 to 34 mm diameter, fine porosity, fast flow rate, 1.5 μm particle retention.
5.1.3 Filter Flask, heavy-wall, with side tube, 250-, 500-, or 1000-mL 250, 500, or 1000 mL capacity.
5.1.4 Filter Tube, 40-40 to 42-mm 42 mm inside diameter.
5.1.5 Rubber Tubing or Adapter, for holding the crucible on the filter tube.
NOTE 3—Other suitable assemblies permitting vacuum filtration with a crucible may be used.
5.1.6 Erlenmeyer Flask, 125 mL.
5.1.7 Oven, capable of maintaining a temperature of 110 6 5°C.5 °C.
5.1.8 Balance, Class GP2, conforming to the requirements of Guide D4753.
6. ReagentSolvent
6.1 Trichloroethylene, technical grade.
6.2 Toluene, technical grade.
7. Safety Precautions
7.1 Trichloroethylene is toxic, and good ventilation should be provided.Toluene and trichloroethylene are both toxic solvents and
should be used within a fume hood. Toluene is flammable. Trichloroethylene is a carcinogen. The safety data sheets for either of
these solvents should be reviewed prior to use.
8. Preparation of Crucible
8.1 Assemble the filtering apparatus as shown in Fig. 1Place the crucible . Place filter pad into the Grooch crucible, moisten the
pad with solvent, and seat firmly in the bottom of the crucible with light suction. Place the crucible plus one thickness of the filter
pad in an oven at 110 6 5°C5 °C for 15 min, allow to cool in a des
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