Cement

File:Portland cement Type1 of Taiwan Cement 20180501.jpg

Cement bags made in Taiwan.

Cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource.

Cement is primarily produced by slaking quicklime. This involves adding the quicklime to water to convert it from CaO to CaOH. In this state it can be used as a pickling lime, as cement, plaster, mortar or as a food additive. Though there are many forms of cement, most involve taking limestone, aragonite or seashells, heating them above 900c to remove the organics, then slaking the resultant quicklime.

Dependencies

• Gravel
• Sand
  • Cement
  • Water
    • Concrete

See also

• Concrete
• Gravel
• Lime mortar
• Mortar

References

This article uses material from the Wikipedia article Cement, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).

External links

• Wood ash cement, primitivetechnology.wordpress.com. 17 July 2018.
• How to make Cement From Snail's Shell - Pre Technology, 14 October 2021, YouTube