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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.
- The Editors of Encyclopaedia Britannica
Apr 17, 2017 · The first use of plaster of Paris as a cast for injured limbs took place through a technique known as plâtre coulé that. became popular in Europe at the beginning of 19 th century. This ...
Oct 21, 2013 · 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. The need to immobilise the fracture to prevent pain and deformity and all the while allowing mobilisation has been the ...
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What is plaster of Paris?
When was plaster of Paris first used?
How to make plaster of Paris (Caso 4 H 2 O)?
What is plaster of Paris hemihydrate?
Oct 16, 2013 · Plaster of Paris is calcined gypsum (roasted gypsum), ground to a fine powder by milling. When water is added, the more soluble form of calcium sulphate returns to the relatively insoluble form, and heat is produced [2 (CaSO 4 .½ H 2 O) + 3H 2 O → 2 (CaSO 4 .2H 2 O) + Heat]. The setting of unmodified plaster starts about 10 min after mixing ...
- 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 ...
Apr 17, 2017 · Plaster of Paris is unique and still remains the favoured casting material in many countries. It is cheap, non-toxic, and can easily be moulded to the desired shapes and contours of the body. Skin irritation and allergy is extremely rare. Application of plaster of Paris requires good knowledge of anatomy and pathology that we are aiming to treat.
