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Portland Cement
Cement is an important component that goes into the production of concrete. While the terms cement and concrete are often used interchangeably, cement is only one ingredient in concrete, which also consists of aggregates (such as gravel and sand) and water. More advanced types of concrete may include additional additives and cementitious materials to control properties such as hardness, setting time, and durability.
Portland cement is type of cement that was named after the Isle of Portland in England, where it was invented by Joseph Aspdin. It is made by grinding and baking a mixture of clay, shale, and limestone, which forms "klinkers" that are then ground up and mixed with gypsum.
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