What is the purpose of using fly ash as a partial replacement for cement?

Practice Questions

Q1
What is the purpose of using fly ash as a partial replacement for cement?
  1. To increase weight
  2. To improve workability
  3. To enhance durability
  4. To reduce cost

Questions & Step-by-Step Solutions

What is the purpose of using fly ash as a partial replacement for cement?
  • Step 1: Understand what fly ash is. Fly ash is a byproduct from burning coal in power plants.
  • Step 2: Learn that fly ash can be used in concrete as a substitute for some of the cement.
  • Step 3: Know that using fly ash can make concrete stronger and last longer (this is called durability).
  • Step 4: Realize that fly ash can make the concrete easier to mix and work with (this is called workability).
  • Step 5: Remember that using fly ash can also lower the cost of making concrete because it reduces the amount of cement needed.
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