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plaster of paris, quick-setting gypsum plaster consisting of a fine white powder (calcium sulfate hemihydrate), which hardens when moistened and allowed to dry. Known since ancient times, plaster of paris is so called because of its preparation from the abundant gypsum found near Paris.
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Feb 18, 2024 · The Origins of Plaster of Paris Plaster of Paris has its origins in the Paris Basin, where large deposits of gypsum were found. The production of plaster of Paris involves a process called calcination, where the gypsum is heated to remove the water content and create calcium sulfate hemihydrate.
Oct 16, 2013 · 1. History. The name Plaster of Paris (POP) had its origins from the fact that it was extensively mined from Montmartre in Paris district. But its use predates the industrial revolution, they have been found on the insides of pyramids.
- Hemant Sharma, Dhanasekara Prabu
- 2013
Applications. Construction: Plaster of Paris is a preferred material for creating decorative elements in architecture. It is also used for creating smooth surfaces on walls or ceilings, owing to its ability to harden upon contact with water. Medical: Owing to its property of hardening with minimal expansion, Plaster of Paris is used in ...
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Apr 17, 2017 · Plaster of Paris is produced by removing the impurities from the mined gypsum and then heating it under controlled conditions to reduce the amount of water of crystallization . Plaster of Paris was well known as a building material for many centuries before it was introduced as casting material.
Gesso, fluid white coating, composed of plaster of paris, chalk, gypsum, or other whiting mixed with glue, applied to smooth surfaces such as wood panels, plaster, stone, or canvas to provide the ground for tempera and oil painting or for gilding and painting carved furniture and picture frames.
