What Is Used to Make Cement?

Answer

Cement basically refers to pulverized brick and volcanic ash additives that are added to burnt lime to obtain a hydraulic binder. Natural cement consists of clay and limestone mainly.
2 Additional Answers
The ingredients used to make cement are Calcite from limestone, Silica, Aluminan plus small amounts of Iron. These ingredients can be collected by mixing limestone and shale ground together and then fired up in a kiln to about 1400°C.
Cement is made up of limestone, clay and cement rock. One pound of cement contains in it 150 billion grains and cement was first made in the early 19th century by burning powdered limestone and clay.
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Limestone (calcium carbonate) is used in cement because it is the key ingredient in its manufacture. Limestone provides quicklime (calcium oxide) when heated. ...
Some of things that are found in cement include: limestone, silica, iron oxide, alumina and magnesia. It is a hydraulic binder and a key component in concretes ...
Limestone can be used in constructing buildings. It can be used for making cement and mortar. Limestone is used to make glass and even used to make roads. ...
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