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

Practice Questions

Q1
What is the main advantage of using fly ash as a partial replacement for cement?
  1. Increases the weight of concrete
  2. Improves workability and reduces permeability
  3. Decreases the setting time
  4. Increases the cost of concrete

Questions & Step-by-Step Solutions

What is the main advantage 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 partial replacement for cement.
  • Step 3: Recognize that using fly ash can improve the workability of concrete, making it easier to mix and pour.
  • Step 4: Note that fly ash helps reduce permeability, which means it makes the concrete less likely to absorb water and other substances.
  • Step 5: Understand that fly ash can enhance the long-term strength of concrete, making it stronger over time.
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