Bulletin, Issue 41913 - Geology |
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A. A. HAMMER alkalies Alumina Al2O3 Alumina and Iron amount of magnesia ANALYSES OF LIMESTONE body of limestone Bossburg burning Calcium carbonate CaCO3 cent chemical composition Chesaw clinker Colville CONSTITUENTS dark colored dark gray dilute hydrochloric acid effervesces feet FeO3 following analyses show grained gray in color grinding hydrochloric acid impurities Iron Al2O3 iron and alumina Iron Fe2O3 iron oxide Jordan property Kettle Falls kiln Laboratory light gray Lime CaO limestone limestone deposits limestone occurs Loss on ignition Magnesia MgO manufacture of Portland marl Metaline Falls mills mixture Northport OKANOGAN COUNTY Orcas Island PEND OREILLE COUNTY Pend Oreille river places Portland cement Portland Cement Company pulverized quarry range 39 east raw materials samples sections shale show the chemical show the composition Silica SiO2 SKAGIT COUNTY small amount STEVENS COUNTY stone stratification texture Total township trace undt valley vary WASHINGTON GEOLOGICAL SURVEY WHATCOM COUNTY
Popular passages
Page 258 - Significance. — The object of this test is to determine the time which elapses from the moment water is added until the paste ceases to be fluid and plastic (called the "initial set"), and also the time required for it to acquire a certain degree of hardness (called the "final
Page 75 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent has been made subsequent to calcination.
Page 104 - ... alumina by 1.1, and the percentage of iron oxide by 0.7; add the products; subtract from the sum thus obtained the percentage of lime oxide in the clayey material plus 1.4 times the percentage of magnesia and call the result n.
Page 89 - ... consequently about 700 pounds of such a mixture would be required to make one barrel of finished cement. With marls the loss on drying and burning is much greater. Russell states...
Page 258 - ... centering, tend to lower the breaking strength. The load should not be applied too suddenly, as it may produce vibration, the shock from which often breaks the briquette before the ultimate strength is reached.
Page 75 - 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 as much of lime, by weight, as of the materials which give the lime its...
Page 77 - In a paper read before the Association of Portland Cement Manufacturers, at Atlantic City, NJ, June 15, 1904«, Dr.
Page 76 - Portland cement is an artificial product obtained by finely pulverizing the clinker produced by burning to semi-fusion an intimate mixture of finely ground calcareous and argillaceous material, this mixture consisting approximately of one part of silica and alumina to three parts of carbonate of lime (or an equivalent amount of lime oxide.) Composition and Constitution.
Page 255 - The specific gravity of a Portland cement is not an indication of its cementing value. It will vary with the constituents of the cement, especially with the content of iron oxide. Thus the white or very light Portland cements, containing only a fraction of a per cent, of iron oxide, usually have a comparatively low specific gravity ranging from 3.05 to 3.15, while a cement containing 3 to 4 per cent. or more of iron oxide may have a specific gravity of 3.20 or even higher. It is materially affected...
Page 108 - My own experiments show that in the rotary kiln about one-half the ash enters the clinker. The West Virginia gas slack coal contains about 10 per cent. ash on the average.