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Cultural heritage collections contain many materials known to be hazardous to the environment and to human health. Some hazardous substances may be an integral part of the object (such as a toxic paint pigment or a naturally radioactive mineral sample), applied as a treatment after the object was made (such as a pesticide) or the result of material degradation (such as the exudation of ...
Acoustic plaster is plaster which contains fibres or aggregate so that it absorbs sound. Early plasters contained asbestos, but newer ones consist of a base layer of absorptive substrate panels, which are typically mineral wool, or a non-combustible inorganic blow-glass granulate. A first finishing layer is then applied on top of the substrate ...
Asbestos poses hazards to maintenance personnel who have to drill holes in walls for installation of cables or pipes. Even if the workers are protected, such maintenance operation may release fibers into the air, which may be inhaled by others. Interventions in areas where asbestos is present often have to follow stringent procedures.
Artex differs from plaster in that it was marketed as a material intended to receive a textured finish, thus enabling a ceiling to be finished without plastering skills. It was widely used in Britain in the 1970s, mainly with the familiar stippled and swirled patterns. Artex was also occasionally used on walls. [2]
The U.S. Environmental Protection Agency has banned asbestos, but the substance lingers in buildings across Cincinnati. Here's what you should know.
An orthopedic cast for the hand made out of plaster. for making surfaces like the walls of a house smooth before painting them and for making ornamental designs on the ceilings of houses and other buildings. [19] (see Plaster In decorative architecture) for making toys, decorative materials, cheap ornaments, cosmetics, and black-board chalk. [19]
Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -toss) [1] is a group of naturally occurring, toxic, carcinogenic and fibrous silicate minerals.There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) [2] being composed of many microscopic "fibrils" that can be released into ...
Whitewash, calcimine, kalsomine, calsomine, asbestis or lime paint is a type of paint made from slaked lime (calcium hydroxide, Ca(OH) 2) or chalk (calcium carbonate, CaCO 3), sometimes known as "whiting". Various other additives are sometimes used.