ASTM D7553-15(2021)

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.
Designation: D7553 − 15 (Reapproved 2021)
Standard Test Method for
Solubility of Asphalt Materials in N-Propyl Bromide
This standard is issued under the fixed designation D7553; 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.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This test method covers the determination of the degree
of solubility in n-propyl bromide of asphalt materials. It is D4 Test Method for Bitumen Content
D2042 Test Method for Solubility of Asphalt Materials in
intended to be a replacement for Test Method D2042 specify-
ingasolventthat,liketrichloroethylene,issafeinthatithasno Trichloroethylene
flash point, and has similar solubilizing characteristics to D2318 Test Method for Quinoline-Insoluble (QI) Content of
trichloroethylene, but it is not considered to be an ozone Tar and Pitch
depleter banned by the Kyoto Protocol. D2764 Test Method for Dimethylformamide-Insoluble
(DMF-I) Content of Tar and Pitch
NOTE 1—This method is not applicable to tars and their distillation
D3666 Specification for Minimum Requirements for Agen-
residuesorhighlycrackedpetroleumproducts.Formethodscoveringtars,
cies Testing and Inspecting Road and Paving Materials
pitches, and other highly cracked petroleum products, and the use of other
solvents, see Test Methods D4, D2318, and D2764.
D6368 Specification for Vapor-Degreasing Solvents Based
on normal-Propyl Bromide and Technical Grade normal-
1.2 The text of this standard references notes and footnotes
Propyl Bromide
which provide explanatory material. These notes and footnotes
E177 Practice for Use of the Terms Precision and Bias in
(excluding those in tables and figures) shall not be considered
ASTM Test Methods
as requirements of the standard.
E691 Practice for Conducting an Interlaboratory Study to
1.3 The values stated in SI units are to be regarded as
Determine the Precision of a Test Method
standard. No other units of measurement are included in this
standard.
3. Summary of Test Method
1.4 This standard does not purport to address all of the
3.1 Thesampleisdissolvedinn-propylbromideandfiltered
safety concerns, if any, associated with its use. It is the
through a glass fiber pad. The insoluble material is washed,
responsibility of the user of this standard to establish appro-
dried, and weighed.
priate safety, health, and environmental practices and deter-
4. Significance and Use
mine the applicability of regulatory limitations prior to use.
Specific precaution statements are given in Section 7.
4.1 Thistestmethodisameasureofthesolubilityofasphalt
1.5 This international standard was developed in accor-
in n-propyl bromide. The portion that is soluble in n-propyl
dance with internationally recognized principles on standard-
bromide represents the active cementing constituents.
ization established in the Decision on Principles for the
NOTE 2—The quality of the results produced by this standard are
Development of International Standards, Guides and Recom-
dependent on the competence of the personnel performing the procedure
mendations issued by the World Trade Organization Technical
and the capability, calibration, and maintenance of the equipment used.
Barriers to Trade (TBT) Committee.
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.
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. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 15, 2021. Published June 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2009. Last previous edition approved in 2015 as D7553 – 15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D7553-15R21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7553 − 15 (2021)
for 30 6 5 min, and then determine the mass to the nearest
0.1 mg. Designate this mass as A. Store in the desiccator until
ready for use.
9. Sample Preparation
9.1 If the sample is not fluid, heat to any convenient
temperature, but in any case not more than 100 °C above the
softening point. Normally the temperature at which this test is
run is not critical, and it may be performed at the laboratory air
temperature. For referee tests, however, the flask and sample in
solution shall be placed in a water bath maintained at 38.0 6
0.3 °C for 1 h before filtering.
10. Procedure
10.1 Note safety precautions in Section 7. Transfer approxi-
mately2gofthe sample into a tared 125-mLErlenmeyer flask
or other suitable container. Smaller sample sizes may be
necessary if more than 0.5 % insoluble material is expected.
FIG. 1 Filtering Apparatus Assembly Allow the sample to cool to ambient temperature and then
determine the mass to the nearest 1 mg. Designate this mass as
Reliable results depend on many factors; following the suggestions of
B. Add 100 mL of the n-propyl bromide to the container in
Specification D3666 or some similar acceptable guideline provides a
small portions with continuous agitation until all lumps disap-
means of evaluating and controlling some of these factors.
pear and no undissolved sample adheres to the container.
5. Apparatus and Materials Stopper the flask or otherwise cover the container and set aside
for at least 15 min (see Section 9).
5.1 The assembly of a typical filtering apparatus is illus-
trated in Fig. 1. Details of the component parts are as follows:
10.2 Place the previously prepared and weighed crucible in
5.1.1 Bitumen Crucible or Gooch Crucible, glazed inside
the filtering tube. Wet the filter pad with a small portion of
and outside with the exception of outside bottom surface. The
n-propyl bromide and decant the solution through the filter pad
approximate dimensions shall be a diameter of 44 mm at the
of the crucible with or without light suction as may be
top tapering to 36 mm at the bottom and a depth of 20 to
necessary. When the insoluble matter is appreciable, retain as
30 mm.
much of it as possible in the container until the solution has
5.1.2 Glass Microfiber Filter Pad, 32 to 34 mm diameter,
drained through the mat. Wash the container with a small
fine porosity, fast flow rate, 1.5 µm particle retention.
amount of solvent and, using a stream of solvent from a wash
5.1.3 Fi
...