Portland Cement--What Is It How is Portland Cement Made
Portland Cement is a type of cement, not a brand name. Many cement manufacturers make Portland Cement.
Portland cement, the basic ingredient of concrete, is a closely controlled chemical combination of calcium, silicon, aluminum, iron and small amounts of other ingredients to which gypsum is added in the final grinding process to regulate the setting time of the concrete.
The Portland Cement Association'sHow cement is made provides detailed information of the process.
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