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Books Books 1 - 10 of 21 on ... (2) Natural cements, after burning and grinding, are usually yellow to brown....
" ... (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 - United States Geological Survey - Page 334
by Geological Survey (U.S.) - 1905
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Bulletin, Issues 260-261

Geology - 1905
...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...
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The Materials and Manufacture of Portland Cement. By Edwin C. Eckel: The ...

Edwin Clarence Eckel, Eugene Allen Smith - Cement - 1904 - 93 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...
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Experiments on Schistosity and Slaty Cleavage

George Ferdinand Becker - Schistosity - 1904 - 34 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...
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Congressional Serial Set

United States - 1904
...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...
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Bulletin, Issues 241-244

Geology - 1904
...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...
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Cements, Limes, and Plasters: Their Materials, Manufacture, and Properties

Edwin Clarence Eckel - Cement - 1905 - 712 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...
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Iowa Geological Survey, Volume 15

Geology - 1905
...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...
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Contributions to Economic Geology, 1904

Samuel Franklin Emmons - Geology, Economic - 1905 - 620 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...
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The clay deposits of the Virginia coastal plain

Heinrich Ries, William Bullock Clark, Benjamin LeRoy Miller - Clay - 1906 - 184 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...
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Iowa Geological Survey, Volume 17

Geology - 1907
...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...kiln never being heated high enough to even approach the fusing or clinkering point. (4) In use, natural cements set more rapidly than Portland cement,...
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