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

https://www.thehindubusinessline.com/companies/ntpc-invites-eoi-for-sale-of-fly-ash-in-west-asia/article35136212.ece