ASTM D8078-18
(Test Method)Standard Test Method for Ash Content of Asphalt and Emulsified Asphalt Residues
Standard Test Method for Ash Content of Asphalt and Emulsified Asphalt Residues
SIGNIFICANCE AND USE
4.1 This test is used for determining the amount of inorganic or non-organic materials in an asphalt or emulsified asphalt residue. The emulsified asphalt residue can be obtained by methods such as Test Methods D6934 and D6997, Practice D7497, AASHTO R78, or other agency-specified methods. This test may be useful as an alternative to solubility tests when a confounding material creates an interference to the solubility test being performed acceptably. An example of an interfering material is a polymer which may be incompatible with the solubility test solvent and plug the filter.
Note 1: 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. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure 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 those factors.
SCOPE
1.1 This test method measures the ash content of an asphalt or emulsified asphalt residue.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.
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Designation:D8078 −18
Standard Test Method for
1
Ash Content of Asphalt and Emulsified Asphalt Residues
This standard is issued under the fixed designation D8078; 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.
3
1. Scope 2.2 AASHTO Standard:
AASHTOR78 RecoveringResiduefromEmulsifiedAsphalt
1.1 This test method measures the ash content of an asphalt
using Low-Temperature Evaporative Techniques
or emulsified asphalt residue.
1.2 The values stated in SI units are to be regarded as 3. Summary of Test Method
standard. No other units of measurement are included in this
3.1 A known amount of asphalt or emulsified asphalt
standard.
residue is put into a crucible, which is then placed into a muffle
furnace for a period of time to incinerate any organic materials
1.3 The text of this standard references notes and footnotes
which provide explanatory material. These notes and footnotes present and allow gravimetric calculation of the ash content of
the specimen.
(excluding those in tables and figures) shall not be considered
as requirements of the standard.
4. Significance and Use
1.4 This standard does not purport to address all of the
4.1 Thistestisusedfordeterminingtheamountofinorganic
safety concerns, if any, associated with its use. It is the
or non-organic materials in an asphalt or emulsified asphalt
responsibility of the user of this standard to establish appro-
residue. The emulsified asphalt residue can be obtained by
priate safety, health, and environmental practices and deter-
methods such as Test Methods D6934 and D6997, Practice
mine the applicability of regulatory limitations prior to use.
D7497, AASHTO R78, or other agency-specified methods.
1.5 This international standard was developed in accor-
Thistestmaybeusefulasanalternativetosolubilitytestswhen
dance with internationally recognized principles on standard-
a confounding material creates an interference to the solubility
ization established in the Decision on Principles for the
test being performed acceptably. An example of an interfering
Development of International Standards, Guides and Recom-
material is a polymer which may be incompatible with the
mendations issued by the World Trade Organization Technical
solubility test solvent and plug the filter.
Barriers to Trade (TBT) Committee.
NOTE 1—The quality of the results produced by this standard are
2. Referenced Documents
dependent on the competence of the personnel performing the procedure
2 and the capability, calibration, and maintenance of the equipment used.
2.1 ASTM Standards:
Agencies that meet the criteria of Specification D3666 are generally
D3666 Specification for Minimum Requirements for Agen-
considered capable of competent and objective testing, sampling,
cies Testing and Inspecting Road and Paving Materials
inspection, etc. Users of this standard are cautioned that compliance with
D6934 Test Method for Residue by Evaporation of Emulsi- Specification D3666 alone does not completely ensure reliable results.
Reliable results depend on many factors; following the suggestions of
fied Asphalt
Specification D3666 or some similar acceptable guideline provides a
D6997 Test Method for Distillation of Emulsified Asphalt
means of evaluating and controlling some of those factors.
D7497 Practice for Recovering Residue from Emulsified
Asphalt Using Low Temperature Evaporative Technique 5. Apparatus
E691 Practice for Conducting an Interlaboratory Study to
5.1 Crucible—Porcelain or quartz-fiber, of sufficient size
Determine the Precision of a Test Method 3
(normally 30 to 100-cm capacity) and suitability for muffle
furnace, may be used.
1
5.2 Crucible Tongs—Sufficient size to transfer the crucible
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
to and from the muffle furnace safely.
Miscellaneous Asphalt Tests.
5.3 Balance, capable of weighing a minimum of 200 g to
Current edition approved April 1, 2018. Published April 2018. Originally
approved in 2016. Last previous edition approved in 2016 as D8078 – 16. DOI:
within 0.001 g.
10.1520/D8078-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Association of State Highway and Transportation
Standards volume information, refer to the standard’s Document Summary page on Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
the ASTM website. http://www.transportation.org.
Copyright ©ASTM International, 100 Bar
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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: D8078 − 16 D8078 − 18
Standard Test Method for
1
Ash Content of Asphalt and Emulsified Asphalt Residues
This standard is issued under the fixed designation D8078; 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
1.1 This test method measures the ash content of an asphalt or emulsified asphalt residue.
1.2 A precision and bias statement for this standard has not been developed at this time. Therefore, this standard should not be
used for acceptance or rejection of a material for purchasing purposes.
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.
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
2.1 ASTM Standards:
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D6934 Test Method for Residue by Evaporation of Emulsified Asphalt
D6997 Test Method for Distillation of Emulsified Asphalt
D7497 Practice for Recovering Residue from Emulsified Asphalt Using Low Temperature Evaporative Technique
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3
2.2 AASHTO Standard:
AASHTO PP72R78 Recovering Residue from Emulsified Asphalt using Low-Temperature Evaporative Techniques
3. Summary of Test Method
3.1 A known amount of asphalt or emulsified asphalt residue is put into a crucible, which is then placed into a muffle furnace
for a period of time to incinerate any organic materials present and allow gravimetric calculation of the ash content of the specimen.
4. Significance and Use
4.1 This test is used for determining the amount of inorganic or non-organic materials in an asphalt or emulsified asphalt residue.
The emulsified asphalt residue can be obtained by methods such as Test Methods D6934 and D6997, Practice D7497, AASHTO
PP72,R78, or other agency specified agency-specified methods. This test may be useful as an alternative to solubility tests when
a confounding material creates an interference to the solubility test being performed acceptably. An example of an interfering
material is a polymer which may be incompatible with the solubility test solvent and plugsplug the filter.
NOTE 1—The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the
1
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 Oct. 1, 2016April 1, 2018. Published October 2016April 2018. Originally approved in 2016. Last previous edition approved in 2016 as
D8078 – 16. DOI: 10.1520/D8078-16.10.1520/D8078-18.
2
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.
3
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8078 − 18
capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are gene
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