 | Geological Survey of New South Wales - 1916 - 1292 pages
...A pat is then»kept in air at normal temperature for twenty-eight days, while another pat is placed in an atmosphere of steam above boiling water, in a loosely closed vessel, for five hours. (2) Time of Setting. — This test is made with a Vicat needle apparatus, and is for determining... | |
 | Wood - 1900 - 708 pages
...plate about four inches (4") square, from cement paste of normal consistency. This pat is composed in any convenient way in an atmosphere of steam, above boiling water in a loosely closed vessel for five (5) hours, and at the end of that time shall remain firm and hard, and show no signs of cracking,... | |
 | Architecture - 1903 - 340 pages
...Committee of the American Society. After keeping the pat of cement in moist air for twenty-four hours, it is exposed in any convenient way in an atmosphere...above boiling water in a loosely closed vessel for three hours. It will be seen that this requires the use of no apparatus, not even a thermometer, except... | |
 | Myron Samuel Falk - Cement - 1904 - 202 pages
...disintegration. A similar pat is maintained in air at ordinary temperature, and observed at intervals. 73. — Accelerated Test. — A pat is exposed in any convenient...above boiling water, in a loosely closed vessel, for three hours. 74. — To pass these tests satisfactorily the pats should remain firm and hard, and show... | |
 | Edwin Clarence Eckel - Cement - 1905 - 796 pages
...disintegration. A similar pat is maintained in air at ordinary temperature and observed at intervals. 73. Accelerated test. — A pat is exposed in any convenient...above boiling water, in a loosely closed vessel, for three hours. 74. To pass these tests satisfactorily, the pats should remain firm and hard, and show... | |
 | Charles Carroll Brown - Cement - 1905 - 384 pages
...intervals. A similar pat is maintained in air at ordinary temperature and observed at intervals. 51. Accelerated Test. .A 'pat is exposed in any convenient...steam, above boiling water, in a loosely closed vessel. 52. To pass these tests satisfactorily, the pats should remain firm and hard, and show no signs of... | |
 | W. Purves Taylor - Cement - 1905 - 344 pages
...maintained as near 70° Fahr. as practicable, and observed at intervals for at least 28 days. (c) A third pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel for five hours. 24. — These pats, to satisfactorily pass the requirements, shall remain firm and hard... | |
 | Charles Evan Fowler - Bridges - 1905 - 370 pages
...near 70° F. as practicable, and observed at intervals for at least twenty-eight days. (c) A third pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel for five hours. 24. These parts, to satisfactorily pass the requirements, shall remain firm and hard and... | |
 | Frederick Winslow Taylor, Sanford Eleazer Thompson - Concrete - 1905 - 664 pages
...maintained as near 70° Fahr. as practicable, and observed at intervals for at least 28 days. (c) A third pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel for five hours. These pats to satisfactorily pass the requirements shall remain firm and hard and show... | |
 | Mineral industries - 1905 - 708 pages
...maintained as near 70° F. as practicable, and observed at intervals for at least 28 days; (c) a third pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel for five hours. These pats, to pass the requirements satisfactorily, shall remain firm and hard and show... | |
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A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. 23. These pats, to satisfactorily pass the requirements, shall remain firm and hard, and show no signs of distortion,... 
