What is Cement?
[[File:Firestop mortar mixing.jpg|thumb|260 px|Cement]] '''Cement''' is a [[material]] that hardens and sticks to other materials to hold them together. [[Portland cement]] is a common kind, and made from [[quicklime]] (heated [[limestone]]) and [[clay]]. Cement is used to make [[concrete]] and [[Mortar (masonry)|mortar]]. Cement is widely used for plastering and rendering. Plastering is done for the inner walls, and cement rendering is done for the exterior walls. Cement rendering is also used to clad brickwork on either exterior, interior, or boundary walls.<ref>{{Cite web|last=|title=Applications of Cement Render for Your House|url=https://sydneyrenderingpros.com.au/applications-of-cement-render-for-your-house/|access-date=|website=Cement Render|language=en-AU}}</ref> This keeps brickwork protected from rain and water. Joseph Aspdin developed Portland cement in the 19th century. He heated ground limestone and clay mix and then pulverized the mixture into fine powder.<ref>{{Cite web|title=History of Cement {{!}} Construction Materials|url=https://www.cemexusa.com/products-and-services/cement/history-facts|access-date=2023-02-25|website=www.cemexusa.com|language=en-US}}</ref> In 1824 he also obtained a patent for his creation. Portland cement is suitable for wet climates and can be used underwater. The global cement market is estimated to be around $340 billion. China is the top cement producer, followed by India and the USA.<ref>{{Cite web|title=Cement Market Size, Share {{!}} Global Industry Trends, 2022-2029|url=https://www.fortunebusinessinsights.com/industry-reports/cement-market-101825|access-date=2023-02-25|website=www.fortunebusinessinsights.com|language=en}}</ref> The rising population is driving the cement demand. Countries in Asia, the Middle East, and Africa are improving their infrastructure which is resulting in the growth of the global cement industry. == References == <references /> {{commonscat|Cement}} [[Category:Building materials]] {{stub}}