 | 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... | |
 | Edwin Clarence Eckel, Eugene Allen Smith - 1904 - 93 Seiten
...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 - 1904 - 34 Seiten
...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... | |
 | 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... | |
 | Geological Survey (U.S.) - 1905
...grinding, are usually yellow to brown and light, in weight, their specific gravity being about 2.7 to 2.9; Portland cement is commonly blue to gray in...heated high enough to even approach (he fusing or clinkering point. (-Í) Natural cements set more rapidly than Portland cement, but do not attain so... | |
 | Edwin Clarence Eckel - 1905 - 712 Seiten
...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... | |
 | 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... | |
 | Samuel Franklin Emmons - 1905 - 620 Seiten
...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.) - 1905
...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... | |
 | Heinrich Ries - 1906 - 184 Seiten
...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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... (2) Natural cements, after burning and grinding, are usually yellow to brown in color and light in weight, their specific gravity being about... 
