Colour cement and white cement
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Coloured cement is manufactured by mixing pigments like chromium oxide, cobalt, iron oxide, or manganese dioxide at 5-10% by weight with ordinary Portland cement to produce different colours. The amount of pigment used depends on the desired shade. White cement is made from pure limestone and clay without iron oxides or other pigments, and the kiln is fired with oil instead of coal to avoid contamination, giving it a milky white appearance. White cement has similar strength and setting time to ordinary Portland cement and is used for highways, curbs, and ornamental and cast stone work.
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Description is the fiction-writing mode for transmitting a mental image of the particulars of a story. Together with dialogue, narration, exposition, and summarization, description is one of the most widely recognized of the fiction-w
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This document discusses cement, including its composition, manufacturing process, types, storage, field and laboratory tests. Cement is produced by burning and crushing limestone and clay. The main steps are mixing raw materials, burning at high temperatures, and grinding the resulting clinker along with gypsum. Common cement types include ordinary Portland cement, Portland pozzolana cement, and colored cement. Proper storage and testing ensures the quality and performance of cement.
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Cement
Popular as Building material.
Material with adhesive and cohesive properties.
To bind the fine and corse aggregate together.
Common variety of cement is known as the Portland cement.
India is the fifth largest producer of cement in the world.
Rajasthan is the second largest producer of cement in india after Andra Pradesh.
Construction materils 1.0
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This document discusses different types of cement. It describes ordinary Portland cement as the most widely used type, and also discusses low heat cement, rapid hardening cement, sulphate resistant cement, and white/colored cement. Each type has different compositions and properties that make them suitable for specific construction applications. For example, low heat cement produces less heat during curing to prevent cracking in large concrete structures, while sulphate resistant cement provides protection against sulfate attack in foundations or other applications exposed to sulfate salts.
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- 2. • Coloured cement is manufactured by mixing colour pigments (5-10 % ) with OPC • The Pigment is mixed in a finest powdered state. • The amount of pigment used depends upon the shade of the desired color.
- 3. Colour cement • generally less than 10 percent (by weight). The following pigments are used to obtain colored cement. • Chromium oxide is used for green color. • Cobalt is used for blue color. • Iron oxide is used for various shades of red, brown and yellow color. • Manganese dioxide is used to obtain black and deep brown color.
- 4. Application
- 5. •It may also be defined as a special type of Portland cement when used it gives a milky or snow-white appearance. •White cement are manufactured from pure limestone (chalk) and clay that are totally free from iron oxides and any other pigments like manganese and chromium.
- 6. Cont… •The kiln is fired by oil rather than by coal to avoid any contamination. •There strength and setting time is similar to ordinary Portland cement. •White cement are the most favored material for use in making highways curbs and for a variety of ornamental work. They are also used widely for making cast stones of appealing appearance.
- 7. Application