 | United States. War Department - 1902 - 968 pages
...briquettes: After seven days, 400 pounds; after twenty-eight days, 480 pounds. ~>M. The highest resnltfrom each set of briquettes made at any one time is to...showing an increase of strength in the twenty-eight-day testa over the seven-day tests will be rejected. Briquettes of 1 part cement and 3 parts standard sand:... | |
 | Geological Survey of New South Wales - 1916 - 1292 pages
...days. 500 Ib. Briquettes 1 part cement to 3 parts sand: After 7 days, 140 lb.;^»fter 28 days, 220 Ib. The • highest result from each set of briquettes made at any one time to be considered the governing test. Any cement not showing an increase of strength in the 28-day tests... | |
 | United States. Army. Corps of Engineers - Military engineering - 1901 - 48 pages
...develop the following tensile strengths per square inch: After seven days, 60 pounds; after twenty -eight days, 150 pounds. (11) The highest result from each...cement not showing an increase of strength in the twenty-eight day tests over the seven-day tests will be rejected. and worked for five minutes the cement... | |
 | John Butler Johnson - Engineering - 1902 - 600 pages
...end of twentyeight days, 200 pounds. Briquettes made of one part cement and one part standard sands by weight shall develop the following tensile strengths...cement not showing an increase of strength in the twenty-eight day tests over the seven-day tests will be rejected. (12) The neat cement for briquettes... | |
 | United States. Army. Corps of Engineers - Engineering - 1902 - 892 pages
...sand: After seven days, 120 pounds: after twenty-eight days, 180 pounds. 53. The highest resultfrom each set of briquettes made at any one time is to...of strength in the twenty-eight-day tests over the seven day tests will be rejected. 54. When making briquettes neat cement will be mixed with 20 per... | |
 | United States. War Department - 1902 - 890 pages
...tensile strengths per square inch: After seven days, CO pounds; after twenty-eight days, 150 pounds. 67. The highest result from each set of briquettes made at any one time la to be considered the governing test. Any cement not showing an increase of strength in the twenty-eight-day... | |
 | Benjamin Franklin Thomas, David Alexander Watt - Rivers - 1903 - 554 pages
...following tensile strengths per square inch : After seven days, 60 pounds ; after twenty-eight days, 1 50 pounds. 11. The highest result from each set of briquettes...cent of water by weight, and the sand and cement with 1 7 per cent of water by weight. After being thoroughly mixed and worked for five minutes the cement... | |
 | Benjamin Franklin Thomas, David Alexander Watt - Rivers - 1903 - 556 pages
...strengths per square inch : After seven days, 60 pounds ; after twenty-eight days, 1 50 pounds. n. The highest result from each set of briquettes made...cent of water by weight, and the sand and cement with 1 7 per cent of water by weight. After being thoroughly mixed and worked for 'five minutes the cement... | |
 | Benjamin Franklin Thomas, David Alexander Watt - Rivers - 1903 - 552 pages
...following tensile strengths per square inch : After seven days, 60 pounds ; after twenty-eight days, 1 50 pounds. 11. The highest result from each set of briquettes...of strength in the twenty-eight-day tests over the seven-klay tests will be rejected. 12. The neat cement for briquettes shall be mixed with 30 per cent... | |
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The highest result from each set of briquettes made at any one time is to be considered the governing test. Any cement not showing an increase of strength in the twenty-eight-day tests over the seven-day tests will be rejected. 
