1、UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION May 15, 1962 STANDARD SPECIFICATIONS FOR COAL-TAR DAMPPROOFING COMPOUND 1. The compound shall consist of coal-tar pitch and coal-tar solvents, suit- ably blended to produce a liquid which is smooth and uniform in consistency and which co
2、mplies with the following detail requirements: I I. ,. .- . . . ._ - . .- .- -. . . . . . . .: . . a. Distillate to 440 F, percent, by weight, 25 to 35 b. Softening point of distillation residue, F 140 to 160 ce Water, percent, by weight, maximum 0.5 . d. Shall be suitable for spray application at t
3、emperatures above 60 F e, When applied at a coverage rate of 300 square feet per gallon on a clean, smooth steel surface and allowed to dry insa ventilated 70 F, 50-percent relative-humidity atmosphere, the compound shall dry to a firm, dry film in 24 hours. 2. Methods of Testing 4 . a. Distillation
4、-ASTM: D 20-56, corrected for elevation in accordance with.ASTM: D 86-61 b, Softening point-ASTM: D 36-26 c. Watert-ASTIA: P .: 95-58. I . . . .1 . ,. . . . , ., -. I ., . 1. ._I I ,i s. * . .I. c : ! . ,: I - I C ,. . . . . . , : , . -. . . .- . . . . . . . *. .- . . . I I Supersedes: Standard Specifications for Coal-Tar Dampproofing Compound dated . October 1, 1956 . - I Sheet 1 of 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
