ASTM D6608-20
(Practice)Standard Practice for the Identification of Trinidad Lake Asphalt in Asphalt Mixes
Standard Practice for the Identification of Trinidad Lake Asphalt in Asphalt Mixes
SIGNIFICANCE AND USE
4.1 Asphalt contains sulfur compounds, most of which are removed during refining; the resulting asphalt also contains sulfur compounds which are released at the temperatures above 230 °C. Trinidad Lake Modified Asphalt contains sulfur compounds which are released at lower temperatures between 170 °C and 230 °C. The release of sulfur from Trinidad Lake Modified Asphalt tarnishes the copper strip and appears to be related directly to the total TLA content. The copper strip test is designed to assess the qualitative presence of TLA in asphalt.
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 practice shall be used for the qualitative determination of Trinidad Lake Asphalt in Trinidad Lake Modified Asphalt Cements obtained from production blends or recovered binder from asphalt paving mixtures.
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 This practice is limited to asphalt binders which are produced in accordance with Specification D5710/D5710M.
1.4 Warning—Mercury has been designated by the United States Environmental Protection Agency and many state agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products. See the applicable Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/index.htm—for additional information. Users should be aware that selling mercury and/or mercury-containing products into your state may be prohibited by state law.
1.5 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.
1.6 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.
1.7 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.
General Information
Buy Standard
Standards Content (Sample)
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:D6608 −20
Standard Practice for the
1
Identification of Trinidad Lake Asphalt in Asphalt Mixes
This standard is issued under the fixed designation D6608; 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 mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This practice shall be used for the qualitative determi-
nation of Trinidad Lake Asphalt in Trinidad Lake Modified
2. Referenced Documents
Asphalt Cements obtained from production blends or recov-
2
2.1 ASTM Standards:
ered binder from asphalt paving mixtures.
D140/D140M Practice for Sampling Asphalt Materials
1.2 The values stated in SI units are to be regarded as
D1856 Test Method for Recovery of Asphalt From Solution
standard. No other units of measurement are included in this
by Abson Method
standard.
D2172/D2172M TestMethodsforQuantitativeExtractionof
1.3 This practice is limited to asphalt binders which are Asphalt Binder from Asphalt Mixtures
produced in accordance with Specification D5710/D5710M. D3666 Specification for Minimum Requirements for Agen-
cies Testing and Inspecting Road and Paving Materials
1.4 Warning—Mercury has been designated by the United
D5710/D5710M Specification for Trinidad Lake Modified
States Environmental ProtectionAgency and many state agen-
Asphalt
cies as a hazardous material that can cause central nervous
system, kidney, and liver damage. Mercury, or its vapor, may
3. Summary of Test Method
be hazardous to health and corrosive to materials. Caution
3.1 Apolished copper strip is immersed in a given quantity
should be taken when handling mercury and mercury-
of sample and heated at a temperature and for a given time
containing products. See the applicable Material Safety Data
characteristic of the material being tested. At the end of this
Sheet (MSDS) for details and EPA’s website—http://
periodthecopperstripisremoved,washed,andcomparedwith
www.epa.gov/mercury/index.htm—for additional information.
the classifications of the TLA Copper Tarnishing Ranges for
Users should be aware that selling mercury and/or mercury-
copper strips.
containing products into your state may be prohibited by state
law.
4. Significance and Use
1.5 The text of this standard references notes and footnotes
4.1 Asphalt contains sulfur compounds, most of which are
which provide explanatory material. These notes and footnotes
removed during refining; the resulting asphalt also contains
(excluding those in tables and figures) shall not be considered
sulfurcompoundswhicharereleasedatthetemperaturesabove
as requirements of the standard.
230 °C. Trinidad Lake Modified Asphalt contains sulfur com-
1.6 This standard does not purport to address all of the
pounds which are released at lower temperatures between
safety concerns, if any, associated with its use. It is the
170 °C and 230 °C. The release of sulfur from Trinidad Lake
responsibility of the user of this standard to establish appro-
Modified Asphalt tarnishes the copper strip and appears to be
priate safety, health, and environmental practices and deter-
related directly to the total TLA content. The copper strip test
mine the applicability of regulatory limitations prior to use.
isdesignedtoassessthequalitativepresenceofTLAinasphalt.
1.7 This international standard was developed in accor-
NOTE 1—The quality of the results produced by this standard are
dance with internationally recognized principles on standard-
dependent on the competence of the personnel performing the procedure
ization established in the Decision on Principles for the
and the capability, calibration, and maintenance of the equipment used.
Development of International Standards, Guides and Recom-
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.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.47 on
2
Miscellaneous Asphalt Tests. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2020. Published November 2020. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2000. Last previous edition approved i
...
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: D6608 − 12 D6608 − 20
Standard Practice for the
1
Identification of Trinidad Lake Asphalt in Asphalt Mixes
This standard is issued under the fixed designation D6608; 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 practice shall be used for the qualitative determination of Trinidad Lake Asphalt in Trinidad Lake Modified Asphalt
Cements obtained from production blends or recovered binder from asphalt paving mixtures.
1.2 The values stated isin SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 It This practice is limited to the binder content of Trinidad Lake Modified Asphalt (Specificationasphalt binders which are
produced in accordance with Specification D5710D5710/D5710M) used in the construction of asphalt pavements.
1.4 Warning—Mercury has been designated by the United States Environmental Protection Agency and many state agencies as
a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous
to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing mercury-containing
products. See the applicable Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/
index.htm—for additional information. Users should be aware that selling mercury and/or mercury containing mercury-containing
products into your state may be prohibited by state law.
1.5 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.
1.6 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.
1.7 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:
D140D140/D140M Practice for Sampling Asphalt Materials
D1856 Test Method for Recovery of Asphalt From Solution by Abson Method
D2172D2172/D2172M Test Methods for Quantitative Extraction of Asphalt Binder from Asphalt Mixtures
1
This practice 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 Dec. 1, 2012Nov. 1, 2020. Published December 2012November 2020. Originally approved in 2000. Last previous edition approved in 20062012
as D6608 – 00D6608 – 12.(2006). DOI: 10.1520/D6608-12.10.1520/D6608-20.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6608 − 20
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D5710D5710/D5710M Specification for Trinidad Lake Modified Asphalt
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Summary of Test Method
3.1 A polished copper strip is immersed in a given quantity of sample and heated at a temperature and for a given time
characteristic of the material being tested. At the end of this period the copper strip is removed, washed, and compared with the
classifications of the TLA Copper Tarnishing Ranges for copper strips.
4. Significance and Use
4.1 BitumenAsphalt contains sulfur compounds, most of which are removed during refining,refining; the resulting asphalt cement
also contains sulfur compounds which are released at the temperatures above 230°C.230 °C. Trinidad Lake Modified Asphalt
co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.