10.1. Role of Mineral Admixtures in Green Construction

Try these first

1. 1.

   What are mineral admixtures?

   Hint

   Think about components added to improve concrete performance.

2. 2.

   Name one benefit of using fly ash in concrete.

   Hint

   Consider its impact on cement content.

3. 3.

   What is the primary benefit of using mineral admixtures?

   • Increase sand quantity
   • Reduce cement usage
   • Improve color

   Hint

   Think about the goal of green construction.

4. 4.

   True or False: Mineral admixtures can help earn LEED certification points.

   • True
   • False

   Hint

   Consider the connection between materials and certifications.

5. 5.

   Given a concrete mix using 1000 kg of cement, calculate the potential reduction in CO₂ emissions if 30% is replaced with fly ash.

   Hint

   Use the savings factor and the proportion being replaced.

6. 6.

   Analyze the impact on strength if 20% of cement is replaced with silica fume in a standard concrete mix.

   Hint

   Consider the nature of silica fume and its characteristics.