ASTM D6608-12
(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 Bitumen contains sulfur compounds most of which are removed during refining, the resulting asphalt cement 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 cements.
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 is SI units are to be regarded as standard. No other units of measurement are included in this standard
1.3 It is limited to the binder content of Trinidad Lake Modified Asphalt (Specification D5710) 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 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 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.
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Designation:D6608 −12
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 D2172 Test Methods for Quantitative Extraction of Asphalt
Binder from Asphalt Mixtures
1.1 This practice shall be used for the qualitative determi-
D5710 Specification for Trinidad Lake Modified Asphalt
nation of Trinidad Lake Asphalt in Trinidad Lake Modified
E1 Specification for ASTM Liquid-in-Glass Thermometers
Asphalt Cements obtained from production blends or recov-
ered binder from asphalt paving mixtures.
3. Summary of Test Method
1.2 The values stated is SI units are to be regarded as
3.1 Apolished copper strip is immersed in a given quantity
standard. No other units of measurement are included in this
of sample and heated at a temperature and for a given time
standard.
characteristic of the material being tested. At the end of this
periodthecopperstripisremoved,washed,andcomparedwith
1.3 It is limited to the binder content of Trinidad Lake
Modified Asphalt (Specification D5710) used in the construc- the classifications of the TLA Copper Tarnishing Ranges for
copper strips.
tion of asphalt pavements.
1.4 Warning—Mercury has been designated by the United
4. Significance and Use
States Environmental ProtectionAgency and many state agen-
4.1 Bitumen contains sulfur compounds most of which are
cies as a hazardous material that can cause central nervous
removed during refining, the resulting asphalt cement also
system,kidneyandliverdamage.Mercury,oritsvapor,maybe
contains sulfur compounds which are released at the tempera-
hazardous to health and corrosive to materials. Caution should
tures above 230°C. Trinidad Lake Modified Asphalt contains
be taken when handling mercury and mercury containing
sulfur compounds, which are released at lower temperatures
products. See the applicable Material Safety Data Sheet
between 170°C and 230°C.The release of sulfur fromTrinidad
(MSDS) for details and EPA’s website—http://www.epa.gov/
Lake Modified Asphalt tarnishes the copper strip and appears
mercury/index.htm—for additional information. Users should
to be related directly to the total TLAcontent. The copper strip
be aware that selling mercury and/or mercury containing
test is designed to assess the qualitative presence of TLA in
products into your state may be prohibited by state law.
asphalt cements.
1.5 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 Test Tubes, 25 by 150 mm.
priate safety and health practices and determine the applica-
5.2 Provide a bath, which can maintain a constant tempera-
bility of regulatory limitations prior to use.
ture of 210 6 1°C (410 6 2°F) and 225 6 1°C (437 6 2°F).
The bath should have suitable supports to hold the test tubes in
2. Referenced Documents
a vertical position and immersed to a depth of about 100-mm
2
2.1 ASTM Standards:
(4-in.). Oil or aluminum block baths are suitable.
D140 Practice for Sampling Asphalt Materials
5.3 Thermometric Device, partial immersion thermometer
D1856 Test Method for Recovery of Asphalt From Solution
for indicating the required test temperature, with graduations
by Abson Method
1°C or less. TheASTM 2C thermometer is suitable.Any other
thermometric device of equal accuracy may be used.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
5.4 Polishing Vise, to hold the copper strip firmly without
Paving Materials and is the direct responsibility of Subcommittee D04.47 on
Miscellaneous Asphalt Tests.
marring the edge while polishing. Any suitable holder may be
Current edition approved Dec. 1, 2012. Published December 2012. Originally
used provided that the surface is held tightly and the surface
approved in 2000. Last previous edition approved in 2006 as D6608 – 00(2006).
being polished is supported above the surface of the holder.
DOI: 10.1520/D6608-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.5 Viewing Test Tubes, flat glass test tubes, are convenient
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
for protecting corroded strip and may be used for close
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. inspection and storage.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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...
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 − 00 (Reapproved 2006) D6608 − 12
Standard Practice for
1
the 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 is SI units are to be regarded as standard. No other units of measurement are included in this standard
1.3 It is limited to the binder content of Trinidad Lake Modified Asphalt (Specification D5710) 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 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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D140 Practice for Sampling Bituminous Materials
D1856 Test Method for Recovery of Asphalt From Solution by Abson Method
D2172 Test Methods for Quantitative Extraction of Bitumen From Bituminous Paving Mixtures
D5710 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 Bitumen contains sulfur compounds most of which are removed during refining, the resulting asphalt cement also contains
sulfur compounds which are released at the temperatures above 230°C (446°F). Trinidad Lake Modified Asphalt contains sulfur
compounds, which are released at lower temperatures between 170°C (338°F) and 230°C (446°F). 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 cements.
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 June 1, 2006Dec. 1, 2012. Published June 2006December 2012. Originally approved in 2000. Last previous edition approved in 20002006 as
D6608 – 00.D6608 – 00(2006). DOI: 10.1520/D6608-00R06.10.1520/D6608-12.
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
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D6608 − 12
5. Apparatus
5.1 Test Tubes, 25 by 150 mm.
5.2 Provide a bath, which can maintain a constant temperature of 210 6 1°C (410 6 2°F) and 225 6 1°C (437 6 2°F). The
bath should have suitable supports to hold the test tubes in a vertical position and immersed to a depth of about 100-mm (4-in.).
Oil or aluminum block baths are suitable.
5.3 Thermometer, Thermometric Device,, partial immersion thermometer for indicating the required test temperature, with
graduations 1°C (2°F) or less. The
...
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