 | Sidney Paige, Adolph Knopf - 1907 - 614 sayfa
...composition). 5. Percentage of silt and character of same. ('. Chemical atialygis. — Analyses are to be made to determine the composition and character...hours in moist air 175 7 days (1 day in moist air. (i days in water) 500 28 days (1 day in moist air, 27 days in water) 600 2. One part cement, three... | |
 | American Society of Civil Engineers - 1907 - 956 sayfa
...No. 200 sieve. It shall develop initial set in not less than 30 min., but must develop hard set in not less than 1 hour nor more than 10 hours. Tensile Strength. — The minimum requirements for tensile strength for briquettes -1 in. square in section shall be... | |
 | Geological Survey (U.S.) - 1908 - 154 sayfa
...CLASSIFICATION OP MORTARS MADE WITH TYPICAL PORTLAND CEMENT AND SAND, GRAVEL, AND STONE SCREENINGS Q-INCH SCREEN). A. Proportions and conditions. — Proportions...hours in moist air 175 7 days (1 day in moist air, 0 days in water) 500 28 days (1 day in moist air, 27 days in water) 600 2. One part cement , three... | |
 | 1908 - 876 sayfa
...gravity, not less than 3.10. Fineness, residue not more than 8 per cent on No. 100 nor 25 per eentTm No. 200 sieve. Time of setting: Initial set, not less...hours in moist air 175 7 days (1 day in moist air, (i days in water) 500 28 days (1 day in moist air. 27 days in water) 600 2. One part cement, three... | |
 | Eyvind Lee Heindenreich - 1909 - 398 sayfa
...sieve not less than 75% by weight TIME OF SETTING. Initial set in not less than 30 minutes Hard set In not less than 1 hour nor more than 10 hours TENSILE STRENGTH, NEAT. Age. Strength. 24 hours in moist air 150-200 Ibs. per sq. In. 7 days (1 day in moist air, 6 days... | |
 | William A. Radford, Alfred Sidney Johnson - 1909 - 470 sayfa
...of Setting. It shall not develop initial set in less than 30 minutes, and must develop hard set in not less than 1 hour, nor more than 10 hours. Tensile Strength. The minimum requirements for tensile strength for briquettes one inch square in section, shall be within... | |
 | Charles Fleming Marsh, William Dunn - 1916 - 526 sayfa
...red heat. The loss in weight of ignited cement not to exceed 4 per cent. Initial set not less tlian 30 minutes. Hard set not less than 1 hour, nor more than 10 hrs. Same as USA Government. Same as USA Government. Same as USA Government. Same as USA Government.... | |
 | 1920 - 518 sayfa
...SBTTIHG 20. It shall not develop initial set in less than 30 minutes; and must develop hard set in not less than 1 hour, nor more than 10 hours. TENSILE STRENGTH 21. The minimum requirements for tensile strength for briquettes 1 square inch in cross section shall... | |
 | 1949 - 1012 sayfa
...a number of brands, each of which must meet the following requirements: Specific gravity, not loss than 3.10. Fineness, residue not more than 8 per cent...hours in moist air 175 7 days (1 day in moist air, G days in water) 500 28 days (1 day in moist air. 27 days in water) 600 2. One part cement, three parts... | |
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Portland cement is to be prepared by thoroughly mixing a number of brands, each of which must meet the following requirements: Specific gravity, not less than 3.10. Fineness, residue not more than 8 per cent on No. 100 nor 25 per cent on No. 
