6.3.3. Effects on Concrete

Try these first

1. 1.

   What are mineral admixtures?

   Hint

   Think about materials that enhance qualities of concrete.

2. 2.

   Name one property that fly ash improves in concrete.

   Hint

   Consider how it affects mixing and pouring.

3. 3.

   What is one primary purpose of mineral admixtures in concrete?

   • Reduce water demand
   • Increase shrinkage
   • Make concrete darker
   • Increase weight

   Hint

   Think about how they interact with water in the mix.

4. 4.

   True or False: Silica fume can decrease the permeability of concrete.

   • True
   • False

   Hint

   Consider the impact of fine particles on water passage.

5. 5.

   Discuss the long-term environmental impacts of using mineral admixtures in concrete and how they contribute to sustainable construction.

   Hint

   Consider how waste materials can replace traditional materials.

6. 6.

   Evaluate the trade-offs of early strength gain versus long-term durability when using different mineral admixtures.

   Hint

   Think about specific applications that may require quick strength versus long-term performance.