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Arizona Concrete
Part 1 of Paper
....nt is
manufactured primarily from suitable limestone and shale rocks. Arizona had two
dry-process cement plants in 1969, namely the Arizona Portland Cement Company
plant in Pima County, near Tucson, and the American Cement Corporation plant at
Clarkdale, in Yavapai County (52-53).
The use of cementing materials.... Part 2 of Paper
.... appropriate proportions of calcium oxide, silica,
alumina, and iron oxide components. During manufacture, analyses of all
materials are made frequently to ensure a uniformly high quality cement.
Selected raw materials are crushed, milled, and proportioned in such a
way that the resulting mixture has the desired chemical composition. The raw
materials are generally a mixture of calcareous (calcium oxide) material, such
as limestone, chalk or shells, and an argillaceous (silica and alumin.... |
| Number of words: 1308 - Approximate pages: 5 |
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