 | Agriculture - 1908 - 604 pages
...1. Color: dull bluish gray; any variation from this indi' cates some impurity. 2. Fineness: it must leave by weight a residue of not more than 8 per cent, on a No. -100 sieve, and 25 per cent. on a No. -200 sieve. 3. Time of selting: it must develop the initial set in... | |
 | Edwin Clarence Eckel - Cement - 1905 - 802 pages
...materials, and to which no addition greater than 3 per cent has been made subsequent to calcination. 19. Specific gravity. — The specific gravity of the...thoroughly dried at 100° C., shall be not less than 3.10. 20. Fineness. — It shall leave by weight a residue of not more than 8 per cent on the No. 100, and... | |
 | Gilbert Richard Redgrave - Cement - 1905 - 406 pages
...an argillaceous limestone at a temperature only sufficient to drive off the carbonic acid gas. 12. Specific Gravity. — The specific gravity of the...thoroughly dried at 100° C. shall be not less than 2-8. 13. Fineness. —It shall leave by weight a residue of not more than 10 per cent, on the No. 100,... | |
 | Charles Evan Fowler - Bridges - 1905 - 370 pages
...an argillaceous limestone at a temperature only sufficient to drive off the carbonic acid gas. 12. SPECIFIC GRAVITY. — The specific gravity of the...thoroughly dried at 100° C., shall be not less than 2.8. 13. FINENESS. — It shall leave by weight a residue of not more than 10 per cent. on the No.... | |
 | Gaetano Lanza - Engineering - 1905 - 980 pages
...an argillaceous limestone at a temperature only sufficient to drive off the carbonic acid gas. 12. Specific Gravity. — The specific gravity of the...thoroughly dried at 100° C., shall be not less than 2.8. 13. Fineness. — It shall leave by weight a residue of not more than 10 per cent on the No. 100,... | |
 | Edwin Clarence Eckel - Cement - 1905 - 796 pages
...an argillaceous limestone at a temperature only sufficient to drive off the carbonic-acid gas. 12. Specific gravity.— The specific gravity of the cement...thoroughly dried at 100° C. shall be not less than 2.8. 13. Fineness. — It shall leave by weight a residue of not more than 10 per cent on the No. 100... | |
 | William Albert Noyes - Chemistry - 1905 - 810 pages
...limestone at a temperature only sufficient to drive off the carbonic acid gas. SPECIFIC GRAVITY. (12) The specific gravity of the cement thoroughly dried at 100° C., shall be not less than 2.8. FINENESS. (13) It shall leave by weight a residue of not more than 10 pei cent, on the No. 100,... | |
 | Mineral industries - 1905 - 708 pages
...calcination of an argillaceous limestone at a temperature only sufficient to drive off the carbon dioxide. The specific gravity of the cement thoroughly dried at 100° C. shall be not less than 2.8. It shall leave by weight a residue of not more than lOfo on the No. 100, and 30% on the No. 200... | |
 | William Albert Noyes - Chemistry - 1905 - 808 pages
...specific gravity of the cement, thoroughly dried at 100° C., shall be not less than 3.10. FINENESS. (20) It shall leave by weight a residue of not more than 8 per cent, on the No. too, and not more than 25 percent, on the No. 200 sieve. TIME OF SETTING. (21) It shall develop... | |
 | Gaetano Lanza - Engineering - 1905 - 974 pages
...test h'itil'1 !*• some value within the limits of 50 and 100 Ibs., and so on for each Muted. 19. Specific Gravity. — The specific gravity of the cement, thoroughly dried at 100° C., shall not be less than 3.10. ao. Fineness. — It shall leave by weight a residue of not more than 8 per... | |
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FINENESS. It shall leave by weight a residue of not more than 8 per cent on the No. 100, and not more than 25 per cent on the No. 200 sieve. 
