 | Rufus Charles Beardsley - Dams - 1907 - 532 pages
...raised to a temperature of 45° C. (115° F.) and maintained, at this temperature for 24 hours; or (b), a pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel, for three hours. To pass these tests satisfactorily the pats should remain firm and hard and show no signs... | |
 | Rufus Charles Beardsley - Dams - 1907 - 528 pages
...raised to a temperature of 45° C. (115° F.) and maintained, at this temperature for 24 hours; or (b), a pat is exposed in any convenient way in an atmosphere...above boiling water, in a loosely closed vessel, for three hours. To pass these tests satisfactorily the pats should remain firm and hard and show no signs... | |
 | Louis F. Brayton - Reinforced cement - 1907 - 146 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 satisfactorily pass the requirements, shall remain firm and hard and show... | |
 | American Railway Engineering and Maintenance-of-Way Association - Railroad engineering - 1907 - 308 pages
...intervals. A similar pat is maintained in air at ordinary temperature and observed at intervals. 51. A pat is exposed in any convenient way in an atmosphere...steam, above boiling water, in a loosely closed vessel. Normal Test. Accelerated Test. 52. To pass these tests satisfactorily, the pats should remain firm... | |
 | American Society of Civil Engineers - Civil engineering - 1907 - 1160 pages
...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 of steam, above boiling water, in a loosely-closed vessel, for 5 hours. These pats, to pass the requirements satisfactorily, shall remain... | |
 | Austin Thomas Byrne - Highway engineering - 1907 - 1114 pages
...Boiling-water Test. — Pats of neat cement as above described kept in moist air for 24 hours, then exposed in an atmosphere of steam above boiling water in a loosely closed vessel for 5 hours Shall not crack, warp, soften, nor disintegrate. Tensile Strength. — Briquets one inch square... | |
 | Sidney Paige, Adolph Knopf - Geology - 1907 - 614 pages
...near 70° F. as practicable and observed at intervals for at least 28 days. A third- pat is exposed in an atmosphere of steam above boiling water in a loosely closed vessel for 5 hours. These pats must remain firm and hard and show no signs of distortion, checking, cracking,... | |
 | Leslie Abram Waterbury - Cement - 1908 - 166 pages
...24 hours in moist air, is maintained in air at ordinary temperature and observed at intervals. 7i. ACCELERATED TEST. A pat is exposed in any convenient...above boiling water, in a loosely closed vessel, for 5 hours. The apparatus recommended for making these determinations is shown in Fig. 28. 72. To pass... | |
 | Edward Godfrey - Building - 1908 - 474 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. 24. These pats, to satisfactorily pass the requirements, shall remain firm and hard and... | |
 | Ernest McCullough - Municipal engineering - 1908 - 520 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 pats, to satisfactorily pass the requirements, shall remain firm and hard and... | |
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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,... 
