 | Ontario. Legislative Assembly - Ontario - 1905 - 1154 pages
...diameter onehalf inch thick at the centre and tapering to a thin edge shall be kept in moist atr for n period of twenty-four hours. (a) A pat is then kept...at normal temperature and observed at intervals for it least twenty-eight days. (b) Another pat is kept in water maintained as near seventy degrees F.... | |
 | Mineral industries - 1905 - 708 pages
...retrogression in strength within the periods specified. Pats of neat cement about 3 in. diameter, Vi in. 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 and observed at intervals for at least... | |
 | Gaetano Lanza - Engineering - 1905 - 974 pages
...neat cement of about three riches in diameter, one-half inch thick at center, tapering to a thin dge shall be kept in moist air for a period of twenty-four hours. (a) A pat is then kept in air in normal temperature. (b) Another is kept in water maintained as near 70° F. as pracicable. 17. These... | |
 | Ontario. Department of Mines, Ontario. Bureau of Mines - Geology - 1905 - 668 pages
...Constancy of Volume. Pats of neat cement about three inches in diameter onehalf inch thick at the centre and tapering to a thin edge shall be kept in moist air for i\ period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at... | |
 | Agriculture - 1905 - 912 pages
...shall show no signs of checking or disintegration. Pats of neat cement, 3 or 4 inches in diameter, i inch thick at the center and tapering to a thin edge, shall be preserved in moist air for 24 hours; they shall then be exposed for 3 hours in an atmosphere of steam... | |
 | Ontario. Department of Mines, Ontario. Bureau of Mines - Geology - 1905 - 712 pages
...Constancy of Volume. Pats of neat cement about three inches in diameter onehalf inch thick at the centre and tapering to a thin edge shall be kept in moist air for я period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at... | |
 | Ontario. Legislative Assembly - Ontario - 1905 - 1162 pages
...Ib. of Volume. Pats of neat cement about three inches in diameter onebalf inch thick at the centre and tapering to a thin edge shall be kept in moist air for « period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at... | |
 | Ontario. Department of Mines, Ontario. Bureau of Mines - Geology - 1905 - 670 pages
...Constancy of Volume. Pats of neat cement about three inches in diameter onehalf inch thick at the centre and tapering to a thin edge shall be kept in moist air for i\ period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at... | |
 | Portland Cement Association - Cement - 1905 - 44 pages
...about three inches in diameter, 85 one-half inch thick at the centre, and tapering to a thin edge, 86 shall be kept in moist air for a period of twenty-four hours. 87 (a) A pat is then kept in air at normal temperature and 88 observed at intervals for 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. 
