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Coal Tar Pitch
PRI provides testing, evaluation and product certification support for coal tar pitch and products containing coal tar pitch.

Coal tar pitch has a niche use in the paving and roofing markets. Most of their uses revolve around pavement sealers and built – up roofing assemblies.

PRI also provides product development and improvement services manufacturers of coal tar pitched based products.

A partial listing of our services is below. Other testing protocols are available; inquire if the specific test or property is not listed.
Specifications
AASHTO AASHTO M 52; Specification for RTCB 5 & 6

ASTM ASTM D 490; Specification for Road Tar

Federal (FAA) FAA AC 150/5370-10C, Section Item P 403; Bituminous Tack Coat

Federal (Military) Federal (Military) MIL-C-1848OB; Specification for Cold-Applied Coal Tar Base Compound for Use on Steel Structures
Individual Test Methods or Properties Test Method
Ash Content ASTM D 128; Test Method for Analysis of Lubricating Grease

Bitumen Content ASTM D 4; Test Method for Bitumen Content

Distillation ASTM D 20; Distillation of Road Tars

Drying ASTM D 4061; Test Method for Retroflectance of Horizontal Coating (doctor blade application)

Evaluation of Coal Tar Emulsion Modifiers PRI TM-019; Evaluation of Coal Tar Emulsion Modifiers

Flash Point, Cleveland Open Cup (COC) AASHTO T 48; Flash and Fire Points by Cleveland Open Cup Tester

Flash Point, Cleveland Open Cup (COC) ASTM D 92; Flash and Fire Points by Cleveland Open Cup

Flash Point, Cleveland Open Cup (COC) EN 22592 (b); Flash and Fire Points by Cleveland Open Cup

Float ASTM D 139; Float Test for Bituminous Materials

Penetration - Asphalt Binders AASHTO T 49; Test Method for Penetration of Bituminous Materials

Penetration - Asphalt Binders ASTM D 5; Test Method for Penetration of Bituminous Materials

Penetration - Asphalt Binders EN 1426; Penetration of Bituminous Materials

Resistance to Alkali MIL-C-1848OB; Test Method for Resistance to Alkali, para 4.3.1.6

Resistance to Impact MIL-C-1848OB; Test Method for Resistance to Impact, para 4.3.1.5

Sag MIL-C-1848OB; Tesst Method for Sag at 23 °C, para 4.3.1.3

Softening Point ASTM D 36; Softening Point of Bitumen (Ring & Ball Apparatus)

Softening Point AASHTO T 53; Softening Point of Bitumen (Ring and Ball Apparatus)

Solubility in TCE AASHTO T 44; Solubility of Asphalt Materials in Trichloroethylene

Solubility in TCE ASTM D 2042; Solubility of Asphalt Materials in Trichloroethylene (also other solvents)

Solubility in TCE EN 12592; Solubility of Asphalt Material in Trichloroethylene (also other solvents)

Specific Gravity AASHTO T 228; Density of Semi-Solid Bituminous Materials (pycnometer method)

Specific Gravity ASTM D 70; Density of Semi-Solid Bituminous Materials (pycnometer method)

Tar Acids ASTM D 453; Test Method for Tar Acids in Creosote-Coal Tar Solutions

Viscosity, Saybolt Furol ASTM D 88; Saybolt Furol Viscosity of Bituminous Materials

Viscosity, Specific (Engler) ASTM D 1665; Test Method for Engler Specific Viscosity of Tar Products

Water Content ASTM D 95; Test Method for Water in petroleum Products and Bituminous Materials by Distillation

Water Content AASHTO T 55; Test Method for Water in petroleum Products and Bituminous Materials by Distillation

Workability - Mixtures MIL-C-1848OB; Test Method for Workability
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