6.17. Challenges and Limitations

Try these first

1. 1.

   What is a challenge associated with the use of fly ash as a mineral admixture?

   Hint

   Consider how differences in material properties might impact outcomes.

2. 2.

   What does increased quality control entail when using mineral admixtures?

   Hint

   Think about why consistency in materials matters.

3. 3.

   What can variability in mineral admixtures lead to?

   • Consistent performance
   • Variable performance
   • Enhanced strength
   • Reduced cost

   Hint

   Think about how different material properties affect results.

4. 4.

   True or False: The transportation of mineral admixtures is a minor concern in most construction projects.

   • True
   • False

   Hint

   Consider how logistics affect material sourcing.

5. 5.

   Given the logistical issues with sourcing silica fume, propose an alternative mineral admixture and justify your choice based on local availability.

   Hint

   Think about the local sources of industrial by-products.

6. 6.

   Evaluate the risks associated with not conducting quality control tests on mineral admixtures from varied sources.

   Hint

   Consider what could happen if materials do not meet specified standards.