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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 ...
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 ...
Asbestos insulating board (AIB), also known by the trade names Asbestolux and Turnabestos, is an asbestos -containing board formerly used in construction for its fire resistance and insulating properties. [1] These boards were commonly used in the United Kingdom from the 1950s until production ended in 1980. AIB is 16-35% asbestos, typically a ...
Sheet sizes vary slightly from manufacturer to manufacturer but generally they range between 2400 – 3000 mm in length and 900 –1200mm in width (600 & 450 mm increments). This manufactured size minimizes on-site wastage as residential floor, wall and roof structures lay structural members at 450 or 600mm centres.
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 ...
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 ...
Chrysotile or white asbestos is the most commonly encountered form of asbestos, [5] accounting for approximately 95% of the asbestos in the United States [6] and a similar proportion in other countries. [7] It is a soft, fibrous silicate mineral in the serpentine subgroup of phyllosilicates; as such, it is distinct from other asbestiform ...
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 ...