Structure and properties of asbestos fibres

CHOCIDOLITE Slue Asbestos N sOjFs gO pSFeO.SSiOgiHsO 

Type Fibre Tensile strength (MPa) Modulus of elastjaty (GPa) 

As indicated previously, the fibre properties depend also on the degree of fiberization obtained during their processing. This can be measured by surface 

When considering the performance of the fibres in the wet stage, their surface properties must be considered. The filterability of amphiboles is usually better than that of chrysotiles. This can be attributed to the higher surface activity and zeta potential of the chrysotile and its more hydrophilic nature, which can lead to reaction with the hydrated material formed early on. The chrysotiles tend to pack into smaller sedimentation volumes, and react with the cement, thus leading to a low permeability to water. Zeta potential values which are significantly different from zero (which is the case with chrysotile) lead to repulsive forces between the 

I n the asbestos-cement industry it is common to use a blend of different types of asbestos fibres, to optimize the characteristics of the mix in its green (processing) stage, as well as the strength in the hardened state. Some of the asbestos fibres are chosen for their processing characteristics, while others are present because of their efficiency in enhancing strength. 

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