cement
Sign in to savethumb|Cement powder in a bag, ready to be mixed with aggregates and water. thumb|right|Cement block construction examples from the Multiplex Manufacturing Company of Toledo, Ohio, in 1905
AI overview
Cement is a powder material that is mixed with aggregates (like sand and gravel) and water to create concrete, a durable building material used in construction. It matters because concrete made from cement is one of the most widely used materials in the built environment, as evidenced by its long history of application in structures like cement blocks.
AI-generated from the Wikipedia summary — may contain errors.
Article
32 sectionsContents
- Chemistry
- Hydraulic cement
- Non-hydraulic cement
- History
- Alternatives to cement used in antiquity
- Ancient Greece and Rome
- Mesoamerica
- Middle Ages
- 16th century
- 18th century
- 19th century
- 20th century
- Types
- Portland cement
- Portland cement blend
- Other
- Manufacture
- Setting, hardening and curing
- Safety issues
- Cement industry in the world
- China
- {{anchor|Environmental and social impacts}}Environmental impacts
- {{chem|CO|2}} emissions
- {{chem|CO|2}} absorption
- Heavy metal emissions in the air
- Heavy metals present in the clinker
- Use of alternative fuels and by-products materials
- Reduced-footprint cement
- See also
- References
- Further reading
- External links
thumb|Cement powder in a bag, ready to be mixed with aggregates and water. thumb|right|Cement block construction examples from the Multiplex Manufacturing Company of Toledo, Ohio, in 1905
A cement is a binder, a chemical 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.