By a Portland cement is meant the product obtained from the heating or calcining up to incipient fusion of intimate mixtures, either natural or artificial, of argillaceous with calcareous substances, the calcined product to contain at least 1.7 times... Bulletin of the United States Geological Survey - Page 22by Geological Survey (U.S.) - 1905Full view - About this book
| Technology - 1906 - 788 pages
...America, England and Germany, is defined by the corps of engineers of the United States Army as being "the product obtained from the heating or calcining up to incipient fusion or intimate mixtures, either natural or artificial, of Argillaceous with calcareous substances, the... | |
| Louis Carlton Sabin - Cement - 1907 - 598 pages
...by the Board of Engineer Officers of the United States Army in 1901 is as follows : "By a Pprtland cement is meant the product obtained from the heating...calcined product to contain at least 1.7 times as much lime, by weight, as of the materials which give the lime its hydraulic properties, and to be finely... | |
| Iowa Geological Survey - Geology - 1907 - 672 pages
...that we have in this country. " By a Portland cement is meant the product obtained from the healing or calcining up to incipient fusion of intimate mixtures,...calcareous substances, the calcined product to contain st least 1.7 times as much of lime, by weight, as of the materials which give the lime its hydraulic... | |
| William A. Radford, Alfred Sidney Johnson - Architecture - 1909 - 474 pages
...States Government (Board of Engineers, U. Sr A., "Professional Papers," No. 28), Portland cement is: "The product obtained from the heating or calcining...substances, the calcined product to contain at least 1.7 times^as much of lime, by weight, as of the materials which give the lime its hydraulic properties,... | |
| United States. Congress. Senate. District of Columbia - 1909 - 514 pages
...135,000 barrels, more or less. 300. Quality. — The cement shall be a Portland, dry and free fw> lumps. By a Portland cement is meant the product obtained...natural or artificial, of argillaceous with calcareous substance-', the calcined product to contain at least 1.7 times as much of lime, by weight, as of the... | |
| Frank Eugene Kidder - Building - 1909 - 1000 pages
...calcium. The definition in the specifications of the Engineer Corps, US Army, 1902, is as follows : "By a Portland cement is meant the product obtained...of intimate mixtures, either natural or artificial, or argillaceous with calcareous substances, the calcined product to contain at least 1.7 times as much... | |
| Lester Dennison Williams - 1909 - 124 pages
...City Engineer. MATERIALS. Cement.- The cement shall be an American Portland, dry and free from lumps. By a Portland cement is meant the product obtained from the heating or calcining up te incipient fusion of intimate mixtures, either natural or artificial, of argillaceous v/ith calcareous... | |
| 1910 - 556 pages
...define portland cement: By a portland cement is meant the product obtained from the heating or calcining to incipient fusion of intimate mixtures, either natural...weight as of the materials which give the lime its bydraulic properties, and to be finely pulverized after said calcination, and thereafter additions... | |
| United States. Congress. House. Committee on Appropriations - Panama Canal (Panama) - 1910 - 544 pages
...to the satisfaction of the commission. The cement shall be Portland cement, dry and free from lumps. By a Portland cement is meant the product obtained...of intimate mixtures, either natural or artificial, or argillaceous with calcareous substances, the calcined product to contain at least 1.7 times as much... | |
| Charles Baskerville - Chemistry - 1910 - 536 pages
...such as hardness. They may also differ in being of natural •We can therefore define portland cement: By a portland cement is meant the product obtained from the heating or calcining to incipient fusion of intimate mixtures, either natural or artificial, of argillaceous with calcareous... | |
| |