Search results
Gypsum plaster (plaster of Paris) Gypsum plaster, also known as plaster of Paris, is a white powder consisting of calcium sulfate hemihydrate. The natural form of the compound is the mineral bassanite. Etymology. The name "plaster of Paris" was given because it was originally made by heating gypsum from a large deposit at Montmartre, a hill in ...
- Calcium sulfate
Calcium sulfate (or calcium sulphate) is the inorganic...
- Gypsum
Upon adding water, after a few dozen minutes, plaster of...
- Calcium sulfate
Plaster of paris, quick-setting gypsum plaster consisting of a fine white powder, which hardens when moistened and allowed to dry. Given that it does not generally shrink or crack when dry, it is an excellent medium for casting molds. Learn more about how plaster of paris is prepared, its uses, and history.
- The Editors of Encyclopaedia Britannica
- Things You Should Know. Make plaster of Paris using 2 parts plaster of Paris powder and 1 part water, stirring until the mixture is smooth and thoroughly blended.
- Video. Tips. Submit a Tip. All tip submissions are carefully reviewed before being published. Thanks for submitting a tip for review!
- Things You’ll Need. Measuring cup. Disposable mixing bowl. Spatula or Disposable spoon. Water. Plaster of Paris powder. Petroleum jelly. White school glue (optional)
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 ...
People also ask
How is plaster of Paris made?
What are the different types of plaster?
What was plaster used for in ancient times?
Over time, the term ‘plaster of Paris’ has become the generic term for gypsum-based plaster. Many ancient Egyptian tomb paintings are created on plaster. It is produced in a way that is similar to lime mortar, except gypsum is used in place of lime and much lower temperatures are needed. The resulting plaster is not as hard as lime mortar.
