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This specification covers the testing and physical requirements of two types of coal-tar pitch suitable for use in the construction of built-up roofing, dampproofing, and membrane waterproofing systems. The coal-tar pitch shall be prepared from selected crudes using suitable refining processes, and shall be homogeneous and free of water. Materials shall be sampled, tested, and conform to properties such as water content, specific gravity, ring-and-ball softening point, Cleveland open cup flash point, solubility in carbon disulfide, ash content, and distillation (total distillates and residue).
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers two types of coal-tar pitch suitable for use in the construction of built-up roofing, dampproofing, and membrane waterproofing systems.
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 non-conformance with the standard.
1.3 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D4 Test Method for Bitumen Content
D20 Test Method for Distillation of Road Tars
D36/D36M Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
D70 Test Method for Density of Semi-Solid Asphalt Binder (Pycnometer Method)
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D95 Test Method for Water in Petroleum Products and Bituminous Materials by Distillation
D140/D140M Practice for Sampling Asphalt Materials
D2398 Test Method for Softening Point of Bitumen in Ethylene Glycol (Ring-and-Ball)
D2415 Test Method for Ash in Coal Tar and Pitch
D3461 Test Method for Softening Point of Asphalt and Pitch (Mettler Cup-and-Ball Method)
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code 30121501(Coal tar); 30151505(Roofing membranes)
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ASTM D450 / D450M-07(2018), Standard Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top