SEYMTK©Fly Ash- Pulverized Fuel Ash (PFA) - ASTM C 618 Class F, BS 3892, BS EN 450 and IS 3812 standards - SEYMTK

Fly Ash is a fine residue resulting from the burning of coal at high temperatures. The most common sources of Fly Ash are electric power generating stations. Fly Ash has become the predominant pozzolan in use through the world due to performance and economic factors. The main content of Fly Ash is Silica.

There are 2 types of Fly Ash Class F and Class C. The types are differentiates based on the sum of Silicon Dioxide (SiO2) + Aluminum Oxide (Ai2O3) + Iron Oxide (Fe2O3), if the sum of this is greater than or equal to 70% it is called Class F Fly Ash, and if The percentage is greater than or equal to 50% it is called Class C Fly Ash.

- Economic Benefits:

  • It replaces Portland cement up to 20 - 50%

- Technical Benefits on Fresh Concrete:

  • Improves workability
  • Improves pump ability
  • Extends time of set
  • Decreases bleeding
  • Decreases early rate of strength pain
  • Reduces heat evolution

- Technical Benefits on Hardened Concrete:

  • Increases strength (long term)
  • Improves pump ability
  • Extends time of set
  • Decreases bleeding
  • Decreases early rate of strength pain
  • Reduces heat evolution

For more information about SEYMTK Fly Ash please refer to the Technical Data Sheet above