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ASTM D6945-03

(Specification)

Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)

Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)

ABSTRACT
This specification covers mineral-colloid-stabilized, emulsified refined coal tar suitable for use as a weather-protective and petroleum (aliphatic) solvent resistant coating. This product is typically applied to commercial lots and other low speed bituminous concrete pavements suitable for protection. The material shall be classified as: Type I and Type II. The refined coal tar emulsion seal coat shall consist of a mixture of refined coal tar emulsion, water, and aggregate and be proportioned within the ranges specified. Mixture and aggregate verification tests shall be performed to conform with the specified requirements.
SCOPE
1.1 This specification covers mineral-colloid-stabilized, emulsified refined coal tar suitable for use as a weather-protective and petroleum (aliphatic) solvent resistant coating. This product is typically applied to commercial lots and other low speed bituminous concrete pavements suitable for protection.
1.2 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 requirements prior to use.

General Information

Status
Historical
Publication Date
09-Jul-2003
ICS
73.040 - Coals
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.09 - Liquid Applied Coatings for Roofing and Asphaltic Concrete Pavement
Current Stage
Ref Project

Relations

Replaced By
ASTM D6945/D6945M-03(2011)e1 - Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)
Effective Date
01-May-2011

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ASTM D6945-03 - Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)ASTM D6945-03 - Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)
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ASTM D6945-03 - Standard Specification for Emulsified Refined Coal-Tar (Ready to Use, Commercial Grade)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6945 – 03
Standard Specification for
Emulsified Refined Coal-Tar (Ready to Use, Commercial
Grade)
This standard is issued under the fixed designation D6945; 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 3.1.1 Type I material—a mixture of refined coal tar emul-
sion meeting Specification D5727, water, and aggregate.
1.1 This specification covers mineral-colloid-stabilized,
3.1.2 Type II material—a mixture of refined coal tar emul-
emulsified refined coal tar suitable for use as a weather-
sion meeting Specification D5727, water, aggregate, and addi-
protective and petroleum (aliphatic) solvent resistant coating.
tive.
This product is typically applied to commercial lots and other
low speed bituminous concrete pavements suitable for protec-
4. Classification
tion.
4.1 Thisspecificationisdesignedtogivespecifyingauthori-
1.2 This standard does not purport to address all of the
ties the information necessary to ensure that the appropriate
safety concerns, if any, associated with its use. It is the
base refined coal tar emulsion mixtures are specified for
responsibility of the user of this standard to establish appro-
protecting bituminous concrete pavements where fuel resis-
priate safety and health practices and determine the applica-
tance is required.
bility of regulatory requirements prior to use.
4.2 Normal aggregate loadings for Type I materials should
2. Referenced Documents rangefrom0.360to0.600kg/L(3to5lb/gal).TypeIImaterials
can have slightly higher loadings of aggregate; however,
2.1 ASTM Standards:
aggregate loadings in excess of 0.720 kg/L (6 lb/gal) are
C136 Test Method for Sieve Analysis of Fine and Coarse
strongly discouraged.
Aggregates
C142 Test Method for Clay Lumps and Friable Particles in
NOTE 1—Several researchers have shown that high aggregate loadings
Aggregates
result in a lack of fuel resistance as determined by the Resistance to
D140 Practice for Sampling Bituminous Materials Kerosene test according to Test Methods D2939. Poor adhesion may also
occur with high sand loadings.
D490 Specification for Road Tar
D2939 Test Methods for Emulsified Bitumens Used as
5. Materials and Manufacture
Protective Coatings
5.1 Base Refined Coal Tar Emulsion—This emulsion shall
D3423 Practice for Application of Emulsified Coal-Tar
be made using binders prepared from a high temperature
Pitch(Mineral Colloid Type)
refinedcoaltarconformingtotherequirementsofSpecification
D5727 Specification for Emulsified Refined Coal Tar (Min-
D490 for RT11 or higher.The use of oil and water gas tar is not
eral Colloid Type)
allowed. The base refined coal tar emulsion shall be in
3. Terminology accordance with all requirements of Specification D5727.
5.2 Aggregate—The aggregate shall be either a natural or
3.1 The refined coal tar emulsion mixed at the contractor’s
manufactured (boiler slag has been used successfully) angular
yard or at the job site shall meet the requirements of Specifi-
aggregate composed of clean, hard, durable particles free of
cation D5727. Mixture Types I and II (see Appendix A of
clay and other objectionable material when tested in accor-
Practice D3423 for standard definition of terms) are described
dance with Test Method C142. (Boiler slag has been used
below:
successfully.)
NOTE 2—It is recommended that this aggregate meet the gradation
This specification is under the jurisdiction of ASTM Committee D08 on
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.09 given in Table 1, when tested in accordance with Test Method C136.
on Bituminous Emulsions.
5.3 Additive—In the case of Type II material, the additive
Current edition approved July 10, 2003. Published August 2003. DOI: 10.1520/
shall be approved by the base refined coal tar emulsion
D6945-03.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
manufacturer.
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.
D6945 – 03
A
TABLE 1 Gradation of Aggregates TABLE 3 Type II—Composition of Mixture per 100 gal of Refined
Coal Tar Emulsion
Percent Passing
Sieve Size
Refined Coal
Course Medium Fine
Water, Additive, Aggregate,
Application Tar Emulsion,
L (gal) L (gal) mg (lb)
1.18 mm (No. 16) 100 100 100 L (gal)
0.850 mm (No. 20) 85-100 98-100 100
First and Second 100 (100) 25-70 (25-70) 2-6 (2-6) 36-72 (300-600)
0.600 mm (No. 30) 25-85 85-100 98-100
Seal Coat
0.425 mm (No. 40) 5-25 25-85 85-100
0.300 mm (No. 50) 2-10 5-25 25-85
0.212 mm (No. 70) -- 2-10 5-25
0.150 mm (No. 100) 0-2 0-4 2-10
TABLE 4 Physical Requirements for Emusified Refined Coal Tar
0.106 mm (No. 140) -- 0-2 0-2
Mixture Tested According to Test Methods D2939
A
Table1allowsthreechoicesofaggregategradation.In
...

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This specification covers mineral-colloid-stabilized, concentrated, emulsified, and refined coal tar suitable for use as weather-protective and aliphatic-solvent resistant coatings over bituminous pavements, such as those found at airports, parking areas, and driveways. The emulsion shall be homogeneous and exhibit no separation or coagulation of components that cannot be overcome by moderate stirring. Specimens shall be sampled and shall undergo tests to examine their conformance with physical properties such as uniformity, wet film continuity, resistance to freezing, density, residue by evaporation, water content, resistance to volatilization and residue weight loss, solubility of residue in CS2, ash of residue, drying time, flexibility, and resistance to heat, kerosene, and water.
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1.1 This specification covers mineral-colloid-stabilized, concentrated, emulsified, refined coal tar suitable for use as weather-protective and aliphatic-solvent resistant coatings over bituminous pavements, such as those found at airports, parking areas, and driveways. The specification for this material was previously covered by Federal Specification RP355.  
Note 1: Dilute the concentrated emulsion after testing and prior to application to meet the application specification requirements. Application shall be made in accordance with Practice D3423/D3423M.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
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1.4 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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This specification covers mineral-colloid-stabilized, emulsified refined coal tar suitable for use as a weather-protective and petroleum (aliphatic) solvent resistant coating. This product is typically applied to commercial lots and other low speed bituminous concrete pavements suitable for protection. The material shall be classified as: Type I and Type II. The refined coal tar emulsion seal coat shall consist of a mixture of refined coal tar emulsion, water, and aggregate and be proportioned within the ranges specified. Mixture and aggregate verification tests shall be performed to conform with the specified requirements.
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ASTM D6948/D6948M-03(2023)(Practice)
Standard Practice for Application of Refined Coal Tar (Ready to Use, Commercial Grade)

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4.1 This practice is designed as a guide for architects, engineers, property owners or their representatives, or combination thereof. Its use helps ensure the satisfactory performance of the protective coating system when applied over bituminous concrete pavements.
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ASTM D1857/D1857M-24(Test Method)
Standard Test Method for Fusibility of Coal and Coke Ash

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5.1 The design of most coal combustion and coal conversion equipment anticipates that the ash either remain solid or assume some degree of fluidity, depending on the particular design. Ash fusibility temperatures help predict whether the ash will perform properly in the process for which the coal was chosen.  
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5.4 Ash yield is used, (1) as a parameter for evaluating sampling procedures and coal cleaning processes,  (2) in the ultimate analysis calculation of oxygen by difference using Practice D3176, (3) in calculations including material balance, reactivity and yields of products relevant to coal conversion processes such as gasification and liquefaction, (4)  in calculations to estimate the loading on electrostatic precipitators and on the fly ash and bottom ash disposal systems as well as erosion rates on boiler systems.  
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1.1.1 Practice D2234/D2234M references the four conditions of collecting sample increments: Condition A (Stopped Belt Cut), Condition B (Full-stream Cut), Condition C (Part-stream Cut), and Condition D (Stationary Sampling). This practice directs the user to the appropriate coal standard to apply to each condition, as well as key considerations.  
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