7.4. Mix Design Procedure for HPC

Try these first

1. 1.

   Define the water-binder ratio.

   Hint

   Think of how water interacts with the binder.

2. 2.

   List two characteristics of HPC.

   Hint

   Think about what makes HPC different from normal concrete.

3. 3.

   What is the typical range for the water-binder ratio in HPC?

   • 0.15-0.25
   • 0.25-0.35
   • 0.35-0.45

   Hint

   Think of the range provided in the section.

4. 4.

   True or False: Silica fume is considered a supplementary cementitious material.

   • True
   • False

   Hint

   Think about materials that enhance binder performance.

5. 5.

   A concrete structure is required to withstand severe marine exposure. Draft a potential mix design outlining binder content, SCMs, and w/b ratio justifying each choice based on durability needs.

   Hint

   Refer to marine exposure considerations and typical ratios.

6. 6.

   Discuss the impact of varying the aggregate size from coarse to fine on the overall properties of HPC. Create a scenario where this would either benefit or harm the performance.

   Hint

   Consider specific examples of when changing aggregate size may be beneficial or detrimental.