What Is Asbestos Fibre
Chrysotile fibre, commonly known as white Fibre, is a naturally occurring mineral found mostly in underground rock formations all over the World. Its commercial deposits are found in Canada, Brazil, Zimbabwe, Russia, China and to some extent in India too. Its high tensile strength, heat resistance, and chemical durability make it a vital component in Fibre Cement sheets and pipes. Unlike its banned counterparts from the Amphibole group, Chrysotile is considered safe when used under controlled conditions.
What is Chrysotile Fibre?
Chrysotile fibre belongs to the Serpentine mineral group and is extracted through mining and rock crushing. It has been widely used for decades in the construction industry due to its reinforcing properties and exceptional durability.
The Two Types of Fibre
Asbestos Fibre is a commercial term for six silicate minerals with fibrous crystal formations. These minerals fall into two distinct groups:
- Serpentine Group – Chrysotile (White Fibre Cement)
- The only variety currently in commercial use
- Can be used safely under controlled conditions
- Imported primarily from Russia, Kazakhstan, and Brazil
- Amphibole Group – Banned globally due to health risks
- Amosite (Brown Fibre Cement)
- Crocidolite (Blue Fibre Cement)
- Tremolite, Actinolite, and Anthophyllite
Mining, production, and usage of the Amphibole variety have been prohibited worldwide due to their hazardous effects on health.
The Unique Properties of Chrysotile Fibre
Chrysotile fibre possesses outstanding thermal stability and very high tensile strength. It can withstand temperatures up to 1450°-1500°C (2580°-2670°F), comparable to volcanic lava. Its tensile strength surpasses that of steel, and it is flame-proof, rustproof, and has low electrical and thermal conductivity. These superior properties make it invaluable for construction and insulation materials
Applications of Chrysotile Fibre
Chrysotile Fibre Cement is valued for its superior reinforcing capabilities, making it an essential component in various industries. Some of its key applications include:
- Construction: Used in Fibre Cement sheets, roofing, and insulation materials.
- Automotive Industry: Found in brake linings, clutches, and gaskets.
- Soundproofing: Used in acoustic insulation and vibration-damping materials
Chrysotile Fibre in Our Everyday Life
Fine fibres, invisible to the eye, naturally exist in the air and water across the globe. This means that people unknowingly inhale or ingest these fibres daily. Despite this, studies suggest that Chrysotile remains safe for human exposure under controlled use conditions.
Conclusion
Chrysotile fibre, with its remarkable strength and versatility, remains an essential material in modern construction. This can be used safely under controlled conditions at workplace and does not pose any health hazard to users of Chrysotile cement products. While Amphibole Fibres Cement is are banned globally for commercial purpose, Chrysotile continues to be used safely, ensuring strong and durable infrastructure. Its continued presence in the industry reinforces its status as a magic mineral.