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Asbestos cement, genericized as fibro, fibrolite (short for "fibrous (or fibre) cement sheet"; but different from the natural mineral fibrolite), or AC sheet, is a composite building material consisting of cement and asbestos fibres pressed into thin rigid sheets and other shapes. Invented at the end of the 19th century, [1] the material was ...
Cement board. Cement board is composed of aggregated Portland cement with a glass-fiber mesh on the surfaces. This 5⁄16 inch (7.9 mm) thick cement board is designed as an underlayment for tile floors. These are 3-by-5-foot (91 by 152 cm) sheets. A cement board is a combination of cement and reinforcing fibers formed into sheets, of varying ...
Asbestos abatement. Weathered fibrous asbestos sheeting showing loose fibres. In construction, asbestos abatement is a set of procedures designed to control the release of asbestos fibers from asbestos-containing materials. [1] Asbestos abatement is utilized during general construction in areas containing asbestos materials, particularly when ...
Transite. An example of cement-asbestos corrugated and board products, possibly transite. Transite originated as a brand that Johns Manville, an American company, created in 1929 for a line of asbestos - cement products, including boards and pipes. [1] In time it became a generic term for other companies' similar asbestos-cement products, and ...
Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -toss) [1] is a naturally occurring, carcinogenic, fibrous silicate mineral.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 the atmosphere by ...
Cemesto. A house built with cemesto panels in the Oak Ridge, Tennessee Defense Community, 1949. Cemesto is a sturdy, lightweight, waterproof and fire-resistant composite building material made from a core of sugarcane fiber insulating board, called Celotex, surfaced on both sides with asbestos cement. It was originally developed by the Celotex ...
He mixed 90% cement and 10% asbestos fibres with water and ran it through a cardboard machine, forming strong thin sheets. Originally, the reinforcing fibres were of asbestos and the material was commonly used as siding in house buildings due to its low cost, fire-resistance , water tightness, light weight, and other useful properties.
Handlers of asbestos materials must have a B-Class license for bonded asbestos and an A-Class license for friable asbestos. The town of Wittenoom, in Western Australia was built around a blue asbestos mine. The entire town continues to be contaminated, and has been disincorporated, allowing local authorities to remove references to Wittenoom ...