6.5.1. Origin and Production

Try these first

1. 1.

   What is fly ash?

   Hint

   Think about its origin.

2. 2.

   Name the two classes of fly ash.

   Hint

   Consider their calcium content.

3. 3.

   What process generates fly ash?

   • Incineration of wood
   • Combustion of coal
   • Recycling of plastics

   Hint

   Think about energy sources used in power plants.

4. 4.

   True or False: Class F fly ash has a high calcium content.

   • True
   • False

   Hint

   Consider the classification of fly ash.

5. 5.

   Discuss the role of fly ash in enhancing the sustainability of concrete. Include the environmental aspects.

   Hint

   Focus on its impact on materials and processes.

6. 6.

   Compare the use of Class F and Class C fly ash in specific concrete applications and determine which might be more suitable for high-performance structures.

   Hint

   Consider the properties of the structures in relation to the types of fly ash.