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Various sized cuts of 1 ⁄ 2 in (13 mm) drywall with tools for maintenance and installation . Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (), with or without additives, typically extruded between thick sheets of ...
When the plaster is dry, the pH falls to about 8.6. Non-hydraulic lime plaster requires moisture to set and has to be prevented from drying for several days. The number of qualified tradesmen capable of plastering with lime has declined due to industrialization, deskilling of trade crafts, and widespread adoption of drywall and gypsum veneer ...
In the 14th century, decorative plasterwork called pargeting was being used in South-East England to decorate the exterior of timber-framed buildings. This is a form of incised, moulded or modelled ornament, executed in lime putty or mixtures of lime and gypsum plaster.
Lime plaster was a common building material for wall surfaces in a process known as lath and plaster, whereby a series of wooden strips on a studwork frame was covered with a semi-dry plaster that hardened into a surface. The plaster used in most lath and plaster construction was mainly lime plaster, with a cure time of about a month. To ...
[citation needed] In historic Nasrid architecture, the composition and color of stucco varied depending upon the purity of gypsum stone and additives used to bestow properties to the mixtures such as hardness, setting time, and binding. [25]: 23, 56 The chemical formula for gypsum is CaSO 4 •2H 2 O. Gypsum is the most common sulfate mineral. [29]
Examples can be found in churches and palaces, where stucco is mostly used to provide a smooth, decorative transition from walls to ceiling, decorating and giving measure to ceiling surfaces. Stucco is an integral part of the art of belcomposto , the Baroque concept that integrates the three classic arts , architecture , sculpture , and painting .
Gypsum board [36] is primarily used as a finish for walls and ceilings, and is known in construction as plasterboard, "sheetrock", or drywall. Gypsum provides a degree of fire-resistance to these materials, and glass fibers are added to their composition to accentuate this effect.
Gypsum concrete is a mixture of gypsum plaster and fibreglass rovings. Although plaster and fibres fibrous plaster have been used for many years, especially for ceilings, it was not until the early 1990s that serious studies of the strength and qualities of a walling system Rapidwall , using a mixture of gypsum plaster and 300mm plus fibreglass ...