What is the role of fly ash in concrete mix design?
Practice Questions
Q1
What is the role of fly ash in concrete mix design?
To increase the water demand
To improve the durability and strength
To reduce the setting time
To enhance the color of concrete
Questions & Step-by-Step Solutions
What is the role of fly ash in concrete mix design?
Step 1: Understand what fly ash is. Fly ash is a byproduct from burning coal in power plants.
Step 2: Learn that fly ash is a pozzolanic material. This means it can react with lime in the presence of water to form compounds that strengthen concrete.
Step 3: Know that adding fly ash to concrete can improve its durability. This means the concrete will last longer and resist damage.
Step 4: Realize that fly ash helps reduce permeability. This means it makes the concrete less likely to absorb water, which can prevent damage from freeze-thaw cycles.
Step 5: Understand that using fly ash can enhance the strength of concrete. This means the concrete can hold more weight and resist breaking.
