Question

what is the cement bought with?

Answer 1

Answer:

But cement isn't some sort of naturally occurring organic material - it's manufactured through the chemical combination of 8 main ingredients during the cement production process. These ingredients are generally extracted from limestone, clay, marl, shale, chalk, sand, bauxite, and iron ore.

Answer 2

Natural cement is hydraulic cement made from limestone that has a high clay content (argillaceous limestone). ... The resulting powder is natural cement, which will set when mixed with water, and hardens through a process of cement hydration.The most important raw materials for making cement are limestone, clay and marl. These are extracted from quarries by blasting or by ripping using heavy machinery.

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