 ... (2) Natural cements, after burning and grinding, are usually yellow to brown in color and light in weight, their specific gravity being about 2.7 to...  Bulletin - Page 3341904Full view - About this book
 | Geological Survey of New South Wales - 1916 - 1292 pages
...cement is commonly blue to grey in colour and heavier, its specific gravity ranging from 3-0 to 3-2. " (3) Natural cements are always burned at a lower temperature...much lower temperature, the mass of rock in the kiln rarely being heated high enough to even approach the fusing or clinkering point. " (4) In use natural... | |
 | Geology - 1905 - 830 pages
...usually yellow to brown in color and light in weight, having a specific gravity of ^.7 to 3.1, while Portland cement is commonly blue to gray in color and heavier, its specific gravity ranging from 3 to 3.2. (i) Natural cements set more rapidly than Portland cement, but do not attain so high a tensile... | |
 | Edwin Clarence Eckel - Cement - 1904 - 148 pages
...yellow to brown in color and light in weight, their specific gravity being about 2.7 to 2.9; while Portland cement is commonly blue to gray in color...to 3.2. (3) Natural cements are always burned at a lowej temperature than Portland, and common!}' at a much lower, temperature, the mass of rock in the... | |
 | George Ferdinand Becker - Schistosity - 1904 - 732 pages
...grinding, are usually yellow to brown and light in weight, their specific gravity being about 2.7 to 2.0; Portland cement is commonly blue to gray in color and heavier, its specific gravity ranging from 8.0 to 3.2. (3) Natural cements are always burned at a lower temperature than Portland, and commonly... | |
 | United States - 1904 - 1040 pages
...usually yellow to brown in color and light in weight, having a specific gravity of 2.7 to 3.1, while Portland cement is commonly blue to gray in color and heavier, its specific gravity ranging from 3 to 3.2. (4) Natural cements set more rapidly than Portland cement, but do not attain so high tensile... | |
 | Geological Survey (U.S.) - Geology - 1905 - 462 pages
...cements are made by burning masses of natural rock, not by burning carefully prepared and fineljground artificial mixtures. (2) Natural cements, after burning...kiln never being heated high enough to even approach (he fusing or clinkering point. (-Í) Natural cements set more rapidly than Portland cement, but do... | |
 | Edwin Clarence Eckel - Cement - 1905 - 796 pages
...yellow to brown in color and light in weight, their specific gravity being about 2.7 to 3.10, while Portland cement is commonly blue to gray in color...much lower temperature, the mass of rock in the kiln rarely being heated high enough to even approach the fusing- or clinkering-point. (4) In use natural... | |
 | Geology - 1905 - 602 pages
...yellow to brown in color and light in weigbt, their specific gravity being about 2.7 to 2.9; while Portland cement is commonly blue to gray in color...always burned at a lower temperature than Portland, acd commonly at a much lower temperature, the mass of rock in the kiln never being heated high enough... | |
 | Samuel Franklin Emmons - Geology, Economic - 1905 - 648 pages
...usually yellow to brown in color and light in weight, having a specific gravity of '2."! to 3.1, while Portland cement is commonly blue to gray in color and heavier, its specific gravity ranging from 3 to 3.2. (4) Natural cements set more rapidlv than Portland cement, but do not attain so high a tensile... | |
 | Geological Survey (U.S.) - Geology - 1905 - 644 pages
...usually yellow to brown in color and light in weight, having a specific gravity of '2.7 to 3.1, while Portland cement is commonly blue to gray in color and heavier, its specific gravity ranging from 3 to 3.2. (i) Natural cements set more rapidly than Portland cement, but do not attain so high a tensile... | |
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