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Q: Fly ash brick has:
  • A. Sand
  • B. Lime
  • C. Magnesium Chloride
  • D. All of these
Correct Answer: Option D - Fly ash bricks– The fly ash is a fairly divided residue which result from the combustion of ground or powdered lignite or coal. It is a by-product of thermal power stations. • The fly ash bricks are superior to conventional burnt bricks in shape, technical specifications, compressive strength and impermeability. They are also 20% light in weight and 10 to 15% cheap as compared to the conventional bricks.
D. Fly ash bricks– The fly ash is a fairly divided residue which result from the combustion of ground or powdered lignite or coal. It is a by-product of thermal power stations. • The fly ash bricks are superior to conventional burnt bricks in shape, technical specifications, compressive strength and impermeability. They are also 20% light in weight and 10 to 15% cheap as compared to the conventional bricks.

Explanations:

Fly ash bricks– The fly ash is a fairly divided residue which result from the combustion of ground or powdered lignite or coal. It is a by-product of thermal power stations. • The fly ash bricks are superior to conventional burnt bricks in shape, technical specifications, compressive strength and impermeability. They are also 20% light in weight and 10 to 15% cheap as compared to the conventional bricks.