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What is the role of fly ash in concrete?

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Question: What is the role of fly ash in concrete?

Options:

  1. To increase the weight of concrete
  2. To improve workability and reduce permeability
  3. To enhance color
  4. To act as a bonding agent

Correct Answer: To improve workability and reduce permeability

Solution: 

Fly ash improves workability and reduces permeability in concrete, contributing to its overall performance.

What is the role of fly ash in concrete?

Practice Questions

Q1
What is the role of fly ash in concrete?
  1. To increase the weight of concrete
  2. To improve workability and reduce permeability
  3. To enhance color
  4. To act as a bonding agent

Questions & Step-by-Step Solutions

What is the role of fly ash in concrete?
  • Step 1: Understand what fly ash is. Fly ash is a byproduct from burning coal in power plants.
  • Step 2: Learn how fly ash is used in concrete. It is mixed with cement and aggregates to make concrete.
  • Step 3: Know the benefits of using fly ash. It helps make the concrete easier to work with (workability).
  • Step 4: Recognize that fly ash helps reduce the amount of water that can seep through concrete (reduces permeability).
  • Step 5: Realize that these benefits improve the overall performance of concrete, making it stronger and more durable.
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