 | Ira Osborn Baker - Masonry - 1909 - 778 pages
...neat cement about three inches in diameter, one half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours. (o) A pat is then kept in air at normal temperature and observed at intervals for at least 28 days.... | |
 | Charles Shattuck Hill - Concrete - 1909 - 200 pages
...diameter, % in. thick at center, tapering to a thin edge, shall be kept in moist air for a period of 24 hours. (a) A pat is then kept in air at normal temperature. (&) Another is kept in water maintained as near 70° F. as practicable. 17. These pats are observed... | |
 | Frank Eugene Kidder - Building - 1909 - 998 pages
...inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of 24 hours. (a) A pat is then kept in air at normal temperature. (&) Another pat is kept in water maintained as near 70 degrees Fahr. as practicable. These pats are... | |
 | Frederick Winslow Taylor, Sanford Eleazer Thompson - Concrete construction - 1910 - 336 pages
...neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four...temperature, and observed at intervals for at least 28 days. (6) Another pat is kept in water maintained as near 700 Fahr. as practicable, and observed at intervals... | |
 | Prévost Hubbard - Corrosion and anti-corrosives - 1910 - 440 pages
...neat cement about three inches in diameter, onehalf inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four...temperature and observed at intervals for at least twenty-eight days. (b) Another pat is kept in water maintained as near 70° F as practicable, and observed... | |
 | Prévost Hubbard - Corrosion and anti-corrosives - 1910 - 458 pages
...of neat cement about three inches in diameter, one-half inch thick at center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four...(a) A pat is then kept in air at normal temperature. (b) Another is kept in water maintained as hear 70° F. as practicable. These pats are observed at... | |
 | American Society for Testing Materials - Building materials - 1910 - 326 pages
...Pats of neat cement about three inches in diameter, onehalf inch thick at center, tapering to a thin edge, shall be kept in moist air for a period of twenty-four...(a) A pat is then kept in air at normal temperature. (b) Another is kept in water maintained as near 70° F. as practicable. 16. These pats are observed... | |
 | William A. Radford - Building materials - 1910 - 392 pages
...tapering to a thin edge, shall be kept in moist air for a period of 24 hours. One pat shall then be kept in air at normal temperature, and observed at intervals for at least 28 days. Another pat shall be kept in water maintained as near 70 degrees F. as practicable, and observed at... | |
 | John Christian Ostrup - Reinforced concrete - 1910 - 120 pages
...diameter, £-in. thick at center, tapering to a thin edge, shall be kept in moist air for a period of 24 hours. (a) A pat is then kept in air at normal temperature. (6) Another is kept in water maintained as near 70°, F. as practicable. (c) These pats are observed... | |
 | Myron Henry Lewis, Albert Hotchkiss Chandler - Cement - 1911 - 476 pages
...neat cement about three inches in diameter, one-half inch thick at the centre, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four...observed at intervals for at least 28 days. (b) Another is kept in water maintained as near 70° F. as practicable and observed at intervals of at least 28... | |
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Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at intervals... 
