How and what is cement made of
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How Cement is Made. ...Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron and other ingredients. Common materials used to manufacture cementinclude limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace slag, silica sand, and iron ore .......
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Explanation:
By powdering the silicates and adding some of the chemicals.
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