AD 12500 Chapter Notes - Chapter 7: Portland Cement, Polystyrene, Gypsum
Document Summary
Plaster has been used since egyptian and greek times for painting murals and as a finish for ceilings and walls. It is a thick, pasty mix of gypsum and water, although other additives, such as sand and lime, can be mixed in. Plaster (plaster of paris, for example) remains fairly soft after curing and can be shaped with metal tools for sculpture and other carvings. Plaster: the ornate ceiling and other forms are created with plaster work in this. Stucco is sometimes mistakenly referred to as plaster; however, stucco is made of portland cement, is used primarily on the exterior of buildings, and is more weather resistant than plaster. Synthetic stucco is referred to as exterior insulation and finishing system (eifs) and is not a traditional portland product. Ceramics have been made for centuries (c. 4700 bc) both for utilitarian needs and as expressive art forms.
