What is the difference between 'chrysotile' and 'crocidolite' asbestos?

Chrysotile (white asbestos) belongs to the serpentine group of minerals, whereas Crocidolite (blue asbestos) belongs to the amphibole group (Clause 2.1).

What does 'AC' stand for in product names like 'AC Sheets'?

AC stands for Asbestos Cement, a material made from a mixture of asbestos fibre, Portland cement, and water (Clause 2.2).

What is 'blooming' on an asbestos cement product?

Blooming is a white deposit of calcium carbonate on the surface, formed by the reaction of free lime in the cement with atmospheric carbon dioxide. It is considered a defect (Clause 2.4).

What is meant by 'maturing' of asbestos cement products?

Maturing is the process of storing freshly made asbestos cement products under conditions that allow the cement to hydrate and harden (Clause 2.3).

IS 11707

: 1986

Glossary of terms relating to asbestos

CurrentSpecializedTerminologyMaterials Science · Cement Matrix Products

Download PDF BIS Portal Google

This standard provides a glossary of terms used in the Indian asbestos and asbestos-cement industry. It compiles and standardizes definitions from various other Indian Standards related to asbestos products to ensure uniform terminology and understanding.

Glossary of terms relating to asbestos

Practical Notes

This standard is for terminological reference and historical context only. The use of asbestos in new products is largely banned in India due to severe health risks like asbestosis and cancer. Always consult current environmental and health & safety regulations when identifying, handling, or disposing of existing asbestos-containing materials.