7. High Performance Concrete

Try these first

1. 1.

   What is High Performance Concrete?

   Hint

   Think about what makes it different from regular concrete.

2. 2.

   Name one material used in HPC.

   Hint

   These materials enhance the performance of concrete.

3. 3.

   What is the typical compressive strength of HPC?

   • 30 MPa
   • 60 MPa
   • 100 MPa

   Hint

   Look for the specified range in the section.

4. 4.

   True or False: HPC has a higher permeability than conventional concrete.

   • True
   • False

   Hint

   Remember how HPC is formulated to resist environmental factors.

5. 5.

   Assuming you're tasked to design a HPC mix with a target compressive strength of 80 MPa. Outline your steps to determine the appropriate materials and proportions for the mix.

   Hint

   Think sequentially about the mixture design process.

6. 6.

   You have been asked to evaluate the durability of a concrete sample containing 15% fly ash and 10% silica fume. Discuss how its resistance to chloride penetration might be better compared to a sample with 25% regular cement.

   Hint

   Consider how ingredients interact to affect performance in aggressive environments.