ASTM D6945/D6945M-03(2023)

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:D6945/D6945M −03 (Reapproved 2023)
Standard Specification for
Emulsified Refined Coal-Tar (Ready to Use, Commercial
Grade)
This standard is issued under the fixed designation D6945/D6945M; 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 D490 Specification for Road Tar
D2939 Test Methods for Emulsified Bitumens Used as
1.1 This specification covers mineral-colloid-stabilized,
Protective Coatings (Withdrawn 2012)
emulsified refined coal tar suitable for use as a weather-
D3423/D3423M Practice for Application of Emulsified
protective and petroleum (aliphatic) solvent resistant coating.
Coal-Tar Pitch (Mineral Colloid Type)
This product is typically applied to commercial lots and other
D5727/D5727M Specification for Emulsified Refined Coal
low-speed bituminous concrete pavements suitable for protec-
Tar (Mineral Colloid Type)
tion.
1.2 The values stated in either SI units or inch-pound units 3. Terminology
are to be regarded separately as standard. The values stated in
3.1 The refined coal tar emulsion mixed at the contractor’s
each system may not be exact equivalents; therefore, each
yard or at the job site shall meet the requirements of Specifi-
system shall be used independently of the other. Combining
cation D5727/D5727M. Mixture Types I and II (see Appendix
values from the two systems may result in nonconformance
Aof Practice D3423/D3423M for standard definition of terms)
with the standard.
are described below:
1.3 This standard does not purport to address all of the
3.1.1 Type I material—a mixture of refined coal tar emul-
safety concerns, if any, associated with its use. It is the
sion meeting Specification D5727/D5727M, water, and aggre-
responsibility of the user of this standard to establish appro-
gate.
priate safety, health, and environmental practices and deter-
3.1.2 Type II material—a mixture of refined coal tar emul-
mine the applicability of regulatory limitations prior to use.
sion meeting Specification D5727/D5727M, water, aggregate,
1.4 This international standard was developed in accor-
and additive.
dance with internationally recognized principles on standard-
4. Classification
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.1 Thisspecificationisdesignedtogivespecifyingauthori-
mendations issued by the World Trade Organization Technical
ties the information necessary to ensure that the appropriate
Barriers to Trade (TBT) Committee.
base refined coal tar emulsion mixtures are specified for
protecting bituminous concrete pavements where fuel resis-
2. Referenced Documents
tance is required.
2.1 ASTM Standards:
4.2 Normal aggregate loadings for Type I materials should
C136/C136M Test Method for Sieve Analysis of Fine and
rangefrom0.360to0.600kg/L[3to5lb/gal].TypeIImaterials
Coarse Aggregates
can have slightly higher loadings of aggregate; however,
C142/C142M Test Method for Clay Lumps and Friable
aggregate loadings in excess of 0.720 kg/L [6 lb/gal] are
Particles in Aggregates
strongly discouraged.
D140/D140M Practice for Sampling Asphalt Materials
NOTE 1—Several researchers have shown that high aggregate loadings
result in a lack of fuel resistance as determined by the Resistance to
Kerosene test according to Test Methods D2939. Poor adhesion may also
This specification is under the jurisdiction of ASTM Committee D08 on occur with high sand loadings.
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.09
on Liquid Applied Coatings for Roofing and Asphaltic Concrete Pavement. 5. Materials and Manufacture
Current edition approved Jan. 1, 2023. Published January 2023. Originally
5.1 Base Refined Coal Tar Emulsion—This emulsion shall
approved in 2003. Last previous edition approved in 2017 as D6945/D6945M – 03
(2017). DOI: 10.1520/D6945_D6945M-03R23. be made using binders prepared from a high-temperature
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 last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
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D6945/D6945M−03 (2023)
TABLE 2 Type I—Composition of Mixture per 100 gal of Refined
refinedcoaltarconformingtotherequirementsofSpecification
Coal Tar Emulsion
D490 for RT11 or higher.The use of oil and water gas tar is not
Refined
allowed. The base refined coal tar emulsion shall be in
Coal Tar Water, Aggregate,
Application
accordance with all requirements of Specification D5727/
Emulsion, L [gal] mg [lb]
D5727M.
L [gal]
First and Second Seal 100 25–30 36–60
5.2 Aggregate—The aggregate shall be either a natural or
Coat [100] [25–30] [300–500]
manufactured (boiler slag has been used successfully) angular
aggregate composed of clean, hard, durable particles free of
clay and other objectionable material when tested in accor-
TABLE 3 Type II—Composition of Mixture per 100 gal of Refined
dance with Test Method C142/C142M. (Boiler slag has been Coal Tar Emulsion
used successfully.)
Refined Coal
Water, Additive, Aggregate,
NOTE 2—It is recommended that this aggregate meet the gradation Application Tar Emulsion,
L [gal] L [gal] mg [lb]
L [gal]
given in Ta
...