Orientation of asbestos in asbestos cement

✍ Scribed by L.S. Zevin; I.M. Zevin

• Book ID: 102997309
• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 354 KB
• Volume: 9
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(79)90144-3

✦ Synopsis

The orientation of asbestos fibers in abestos cement can be described by a directional distribution function characterized by two par-~ters: 2 o I -the distribution dispersion in a plane normal to the directio~ of the external pressure applied in forming the product (XOY plane), and 2 0 2 -the distribution dispersion in a plane containing the direction of the applied pressure.

Toe two parameters are determined by X-ray diffractometry. The value of o 2 < 15" for materials formed on Hatechek machines and accordingly 90-95% of fibers make an angle of less than 200 with the mY plane.

The n,--~er of fibres orientated approximately parallel to the direction of the felt movement is 1.5 to 2 t1-~s greater than the number orientated in the transverse direction.