Farm Buildings

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Breeder's gazette, 1911 - Farm buildings - 354 pages
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Page 213 - ... of the clayey materials. The burning takes place at a high temperature, approaching 3,000 F., and must therefore be carried on in kilns of special design and lining. During the burning, combination of the lime with silica, alumina, and iron oxide takes place. The product of the burning is a semifused mass called clinker, and consists of silicates, aluminates, and ferrites of lime in certain definite proportions.
Page 334 - ... one filled with water. Add five gallons of hot water to the mixture, stir it well, and let it stand a few days covered from the dirt.
Page 213 - Portland, and commonly at a much lower temperature, the mass of rock in the kiln never being heated high enough to even approach the fusing or clinkering point.
Page 213 - The cementing materials included under this name are made by mixing powdered slaked lime with either a volcanic ash or a blast-furnace slag. The product is therefore simply a mechanical mixture of two ingredients, as the mixture is not burned at any stage of the process. After mixing, the mixture is finely ground.
Page 199 - A 2" x 3" scantling set edgewise forms the plate and to this the boards of the side walls are nailed. These boards may be of rough lumber if economy in building is desired. If so the inner board should be nailed on first and covered with tarred building paper on the side that will come within the hollow wall when the building is completed. This building paper is to be held in place with laths or strips of thin boards. If only small nails or tacks are used the paper will tear around the nail heads...
Page 212 - During the burning the carbon dioxide of the limestone is almost entirely driven off, and the lime combines with the silica, alumina, and iron oxide, forming a mass containing silicates, aluminates, and ferrites of lime. If the original limestone contained much magnesium carbonate the burned rock will contain a corresponding amount of magnesia.
Page 136 - ... x 50'. Figs. 245 and 249 show the general exterior elevations of the barn as approached from the south and west. The silos are situated at the south end of the barn, some 10' being under the ground. This brings them on a level with the basement and, as they open into the cow stable, it materially lessens the labor of feeding. The annex on the west side of the barn is two stories high. In the basement are stalls for bulls and calves, while the upper story is devoted to the various wagons and implements...
Page 212 - Nonhydraulic cements do not have the property of "setting" or hardening under water. They are made by burning, at a comparatively low temperature, either gypsum or pure limestone. The products obtained by burning gypsum are marketed as "plaster of Paris," "cement plaster," "Keene's cement," etc., according to details in the process of manufacture.
Page 212 - 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, usually about that of ordinary lime burning.
Page 213 - Portland, the mass in the kiln never being heated high enough to even approach the fusing or clinkering point. 3. Natural cements, after burning and grinding, are usually yellow to brown in color and light in weight...

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