What is the main purpose of using fly ash as a supplementary cementitious material?
Practice Questions
1 question
Q1
What is the main purpose of using fly ash as a supplementary cementitious material?
To increase the weight of concrete
To improve workability and durability
To reduce the cost of concrete
To enhance color
Fly ash improves the workability and durability of concrete while also reducing the heat of hydration.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the main purpose of using fly ash as a supplementary cementitious material?
Solution: Fly ash improves the workability and durability of concrete while also reducing the heat of hydration.
Steps: 5
Step 1: Understand what fly ash is - it 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 one main purpose of using fly ash is to improve the workability of concrete, making it easier to mix and pour.
Step 4: Recognize that fly ash also helps increase the durability of concrete, making it last longer and resist damage.
Step 5: Understand that using fly ash can reduce the heat of hydration, which is the heat generated when cement reacts with water, helping to prevent cracks in large concrete structures.
