Plaster of paris consists of gypsum, is a white powder that cures when moistened and dried. The long-known Parisian gypsum is so named because it is made from the abundant Parisian gypsum near Paris.Cement is a binder, a substance used in construction that hardens, and bonds other materials. Cement is rarely used alone, but it is used to combine sand and gravel (aggregate). Mixing fine aggregate with cement makes mortar for masonry, and mixing with sand or gravel makes concrete.
Cement and plaster of paris:
Plaster of Paris is a good medium for casting melds because it generally does not shrink or crack when dried. Widely used to prefab and hold some of the decorative stucco pieces on the ceiling and cornice. Many modern orthopaedic bandages are made of fibreglass or thermoplastics, but they are also used in medicine to make plaster casts to fix fractured bones during healing.Gypsum has the chemical formula (CaSO4) H2O and is well known as calcium sulphate hemihydrate. Cement which is usually inorganic and it consists of lime or calcium silicate and it can be classified as hydraulic and non-hydraulic based on its hardening in the presence of water.
Preparation:
Plaster of Paris is made by heating calcium sulphate dehydrate or gypsum to 120-180 ° C (248-356 ° F). To produce cement it is not an easy process that begins various steps like mining, breaking down raw materials such as limestone and clay into powders called as raw flour andthen it needs to be heated in a cement kiln to a sintering temperature of up to 1450 ° C.
Difference between cement and plaster of paris:
Cement is mainly composed of limestone and clay. Parisian plaster is made from Parisian plaster and is named after the quarries around the town. Parisian gypsum, unlike cement, was used as a moulding material and also for curving after it was mixed very quickly. Gypsum in Paris is not plastic. This is a hard white substance made by adding water to gypsum that has been partially dehydrated with Parisian powder. Hard like cement or concrete, but white and not very strong. Plaster of Paris is an easy-to-mix formulation that mixes with water and dries for a dense, durable, smooth, foam-free finish. Gypsum in Paris is easy to mix and use, making it an ideal material for basic casting, moulding and art projects. No, not all plaster in Paris is the same as white cement. The former is made of Parisian plaster and is used for medical casts such as the treatment of fractures and the latter is used to give a glossy finish to the walls.
Outlook:
Thus both cement and plaster of paris is used for different purposes whereas by plaster of paris a beautiful sculpture is bought out and by cement beautiful building is bought. Both the process of preparing varies and as accordingly they work and help the workers to bring out their imagined thought process. Hence the information about cement and plaster of paris.
