What are the advantages of using fly ash bricks?

Fly ash bricks are manufactured from waste material generated by thermal power plants, specifically the ash from burnt coal. India's annual fly ash generation is projected to reach around 200 million tonnes by the end of the 12th five year plan, and 500 million tonnes by 2032.

Key advantages

• Lightweight construction: The reduced weight of these bricks makes them well suited to multi-storey buildings, as they place less stress and tension on foundations compared with traditional materials.

• Heat absorption: These bricks absorb less heat than clay alternatives, which suits India's climate.

• Cost efficiency: Manufacturing requires less mortar and labour. The production process reduces material waste by around 15%, plaster and jointing costs by 15%, and labour expenses by 7%.

• Strength and water resistance: The material has high compressive strength, low porosity and reduced water absorption, which brings further cost savings.

• Environmental benefits: Production requires no fossil fuels and generates no greenhouse gases. The process preserves topsoil and involves no pollution, which places it in the white category of products.

• Superior quality: Fly ash bricks are stronger, more uniform and denser than clay alternatives, with only around 1% wastage compared with 10% for clay bricks.