Fly Ash
Context:
- NTPC Ltd has invited Expressions of Interest (EoI) for the sale of fly ash from the designated ports of the Middle East and other regions.
- The company aims to utilise 100 per cent of the fly ash generated as a by-product at its coal-fired power plants.
- The fly ash generated at NTPC stations is ideal for use in the manufacture of cement, concrete, concrete products, cellular concrete products and for bricks, blocks and tiles.
- To promote the use of fly ash bricks in building construction, NTPC has set up Fly Ash brick manufacturing Plants at its coal-based plants.
What is Fly ash?
- Fly ash is a fine gray powder consisting mostly of spherical, glassy particles that are produced as a byproduct in coal-fired power stations.
- Fly ash has pozzolanic properties, it reacts with lime to form cementitious compounds.
- It is commonly known as a supplementary cementitious material.
- Fly ash is also known as flue-ash or simply ash.
Application or uses of Fly Ash:
Fly ash is suitable for a wide variety of applications and uses, including:
- Concrete
- Dams
- Flowable fill
- Mines
- Landfills
- Geopolymer concrete
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