coal-tar pitch


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coal-tar pitch

[′kōl ¦tär ‚pich]
(materials)
Dark-brown to black amorphous residue from the redistillation of coal tar; melts at 150°F (66°C); used as a thermoplastic.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

coal-tar pitch, tar

A dark brown to black hydrocarbon obtained by the distillation of coke-oven tar; softening point near 150°F (65°C); used in built-up roofing as a waterproofing agent.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
and Menendez, R.: 2000, A comparative study of air-blown and thermally treated coal-tar pitches, Carbon 38, 517-523.
chose that route when it came time to replace the leaking coal-tar pitch built-up roof on its distribution center in Newnan, GA.
Over the years, French repair crews patched up cracks with liquid coal-tar pitch or cement grout, but these materials did not survive long.