 | Geology - 1909 - 568 pages
...cements. 3. Puzzolan cements. Natural cements. — Natural cements are produced by burning a naturally impure limestone, containing from 15 to 40 per cent. of silica, alumina, and iron oxide, at a comparatively low temperature, about that of ordinary lime burning. The operation can therefore... | |
 | Sanders Publishing Co. (Chicago) - Farm buildings - 1909 - 360 pages
...silica, alumina and iron oxide. Natural cements. — Natural cements are produced by burning a naturally impure limestone, containing from 15 to 40 per cent of silica, alumina and iron oxide, at a comparatively low temperature, about that of ordinary lime burning. The operation can therefore... | |
 | Frank Eugene Kidder - Building - 1909 - 1000 pages
...Natural cement is the product resulting from the burning and subsequent pulverization of a natural clayey limestone containing from 15 to 40 per cent of silica, alumina and iron oxide. There is no preliminary mixing and grinding. The temperature of the burning is about that of the ordinary... | |
 | Oklahoma Geological Survey - Geology - 1911 - 192 pages
...combination of calcium oxide, silica and alumina. Natural Cements : Natural cements are produced by burning an impure limestone, containing from 15 to 40 per cent of silica, alumina, and iron oxide. Other ingredients, notably sodium and potassium oxides, magnesia, and sulphur are generally present... | |
 | Oklahoma Geological Survey - Geology - 1911 - 198 pages
...combination of calcium oxide, silica and alumina. Natural Cements : Natural cements are produced by burning an impure limestone, containing from 15 to 40 per cent of silica, alumina, and iron oxide. Other ingredients, notably sodium and potassium oxides, magnesia, and sulphur are generally present... | |
 | 1911 - 360 pages
...silica, alumina and iron oxide. Natural cements. — Natural cements are produced by burning a naturally impure limestone, containing from 15 to 40 per cent of silica, alumina and iron oxide, at a comparatively low temperature, about that of ordinary lime burning. The operation can therefore... | |
 | Digital images - 1912 - 1256 pages
...States. NATURAL, CEMENT. DEFINITION AND CHARACTERISTICS. Natural cements are the product of burning an impure limestone, containing from 15 to 40 per cent of silica, alumina, and iron oxide, at a comparatively low temperature, about that of ordinary lime burning. The operation can therefore... | |
 | Edwin Clarence Eckel - Portland cement - 1913 - 458 pages
...within the scope of this bulletin. NATURAL CEMENTS. Natural cements are produced by burning a naturally impure limestone, containing from 15 to 40 per cent of silica, alumina, and iron ' Eckel, EC, Cements, limes, and plasters: Their materials, manufacture, and properties, 1905. oxide,... | |
 | Joseph Ross - Waterproofing - 1919 - 464 pages
...very fine powder, made from clinkers resulting from the burning, at a comparatively low temperature, of an impure limestone, containing from 15 to 40 per cent of silica, alumina and iron oxide. It was first manufactured in England in 1796 by James Parker. This cement is comparatively slow setting... | |
 | Joseph Ross - Waterproofing - 1919 - 462 pages
...very fine powder, made from clinkers resulting from the burning, at a comparatively low temperature, of an impure limestone, containing from 15 to 40 per cent of silica, alumina and iron oxide. It was first manufactured in England in 1796 by James Parker. This cement is comparatively slow setting... | |
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Natural cements are produced by burning a naturally impure limestone, containing from 15 to 40 per cent of silica, alumina, and iron oxide, at a comparatively low temperature, about that of ordinary lime burning. The operation can therefore be carried... 
