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Cement: Cement Construction


FACTS ABOUT CEMENT:
There are about 70 varieties of cement and available in powder, paste and liquid form but we are only concerned here with constructional cement commonly known as Portland Cement. (Portland is the town in South England where cement was originally made. Portland (constructional) Cement is a fine powder mixture of various minerals. It is produced by mixing calcareous minerals such as chalk, limestone containing silica and alumina and heating it to 1450 deg C when it cools a clinker is formed. This clinker is then finely ground and mixed with small quantity 3-5% of gypsum which has calcium sulphate in it. The amount of gypsum controls the physical properties of the eventual concrete. Sometimes very minute quantities of pigments are also added. Cement producing processes do however vary

TYPES OF CEMENT:
This is not a comprehensive list.











Cement Standards:
































CEMENT PRODUCING COUNTRIES (Main)

- China, India, Indonesia, Iran, Russia & Ukraine Other CIS countries, Turkey, Pakistan, USA

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CEMENT
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