17. Use of Mineral Admixtures in Fresh Concrete

Try these first

1. 1.

   What is the main benefit of using Fly Ash in concrete?

   Hint

   Think about how it affects mixing properties.

2. 2.

   What is GGBFS used for in concrete?

   Hint

   Consider its role in construction conditions.

3. 3.

   What characteristic of Fly Ash improves the workability of concrete?

   • Angular shape
   • Spherical shape
   • Irregular shape

   Hint

   Consider the shape of the particles.

4. 4.

   Silica Fume decreases workability and increases cohesiveness.

   • True
   • False

   Hint

   Reflect on the properties discussed.

5. 5.

   Discuss the trade-offs associated with using Silica Fume in a high-performance concrete mix. What factors should be considered?

   Hint

   Reflect on both the positive and negative impacts of its use.

6. 6.

   Evaluate a scenario where Rice Husk Ash is used in a coastal region. What are the potential benefits and risks?

   Hint

   Consider environmental factors and their effects on concrete properties.