What is the purpose of using fly ash as a supplementary cementitious material?

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Question: What is the purpose of using fly ash as a supplementary cementitious material?

Options:

Correct Answer: To improve workability and reduce permeability

Solution:

Fly ash improves workability and reduces permeability, contributing to the overall durability of concrete.

What is the purpose of using fly ash as a supplementary cementitious material?

What is the purpose of using fly ash as a supplementary cementitious material?

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 added to concrete as a supplementary material.
Step 3: Know that adding fly ash helps improve the workability of concrete, making it easier to mix and pour.
Step 4: Recognize that fly ash reduces the permeability of concrete, which means it helps prevent water and other substances from entering.
Step 5: Understand that by improving workability and reducing permeability, fly ash contributes to the overall durability of concrete, making it last longer.

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