ASTM D5404-02
(Test Method)Standard Practice for Recovery of Asphalt from Solution Using the Rotary Evaporator
Standard Practice for Recovery of Asphalt from Solution Using the Rotary Evaporator
SCOPE
1.1 This test method is intended to recover asphalt from a solvent using the rotary evaporator to ensure that changes in the asphalt properties during the recovery process are minimized.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5404 – 02
Standard Practice for
Recovery of Asphalt from Solution Using the Rotary
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Evaporator
This standard is issued under the fixed designation D 5404; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope subjected to testing as required.
1.1 This practice is intended to recover asphalt from a
4. Significance and Use
solvent using the rotary evaporator to ensure that changes in
4.1 In order to determine the characteristics of the asphalt in
the asphalt properties during the recovery process are mini-
an asphalt paving mixture, it is necessary to extract the asphalt
mized.
from the aggregate by means of a suitable solvent and then to
1.2 The values stated in SI units are to be regarded as the
recover the asphalt from the solvent without significantly
standard. The values given in parentheses are provided for
changing the asphalt’s properties. The asphalt recovered from
information only.
the solvent by this practice can be tested using the same
1.3 This standard does not purport to address all of the
methods as for the original asphalt cement, and comparisons
safety concerns, if any, associated with its use. It is the
between the properties of the original and recovered asphalt
responsibility of the user of this standard to establish appro-
can be made.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
5.1 Rotary Evaporator (see Fig. 1), equipped with a distil-
2. Referenced Documents
lation flask, a variable speed motor capable of rotating the
2.1 ASTM Standards:
distillation flask at a rate of at least 50 rpm, condenser, solvent
D 92 Test Method for Flash and Fire Points by Cleveland
2 recovery flask, and heated oil bath. The angle of the distillation
Open Cup
flask from the horizontal to the bath is set at approximately 15°.
D 1856 Test Method for Recovery of Asphalt from Solution
3
The distillation flask (Note 1), when fully immersed, should be
by Abson Method
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at a depth of approximately 40 mm (1.5 in.).
D 2939 Test Methods for Emulsified Bitumens Used as
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Protective Coatings
NOTE 1—A flask having a 2000 mL capacity is recommended.
D 6368 Specification for Vapor-Degreasing Grade and Gen-
5.2 Manometer or Vacuum Gage, suitable for measuring the
5
eral Solvent Grade Normal-Propyl Bromide
specified vacuum.
2.2 Federal Specification:
5.3 Gas Flowmeter, capable of indicating a gas flow of up to
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O-T-634 (latest) Trichloroethylene, Technical
1000 mL/min.
5.4 Sample Container, having adequate volume to hold the
3. Summary of Practice
sample and added solvent.
3.1 The solution of solvent and asphalt from a prior extrac-
5.5 Vacuum System, capable of maintaining a vacuum to
tion is distilled by partially immersing the rotating distillation
within 60.7 kPa (65 mm Hg) of the desired level up to and
flask of the rotary evaporator in a heated oil bath while the
including 80 kPa (600 mm Hg).
solution is subjected to a partial vacuum and a flow of nitrogen
gas or carbon dioxide gas. The recovered asphalt can then be
6. Reagents and Materials
6.1 Nitrogen Gas or Carbon Dioxide Gas—A pressurized
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tank with pressure-reducing valve, or other convenient source.
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.25 on
NOTE 2—Different flow rates may be required depending on whether
Analysis of Bituminous Mixtures.
nitrogen gas or carbon dioxide gas is used.
Current edition approved Feb. 10, 2002. Published April 2002. Last previous
edition D 5404 – 97.
6.2 Oil—The oil for the heated oil bath should be USP
2
Annual Book of ASTM Standards, Vol 05.01.
3
Annual Book of ASTM Standards, Vol 04.03.
4
Annual Book of ASTM Standards, Vol 04.04.
5 7
Annual Book of ASTM Standards, Vol 15.05. The Buchi Rotavapor RE-111A, or its equivalent, has been found satisfactory
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Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 for this purpose. The Buchi Rotavapor is available from Fischer Scientific,
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. Pittsburgh, PA.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 5404
centrifuging the solution from a previous extraction.
9. Procedure
9.1 Heat the oil bath to a temperature of 140 6 3°C
...
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