2.1. Cement

Try these first

1. 1.

   What type of cement is most commonly used in HPC?

   Hint

   Think about the name of the cement.

2. 2.

   What is the typical compressive strength of OPC at 28 days?

   Hint

   Consider the definition of high performance.

3. 3.

   What is the minimum compressive strength of OPC at 28 days?

   • 20 MPa
   • 40 MPa
   • 60 MPa

   Hint

   Consider what makes it 'high performance'.

4. 4.

   True or False: Blended cements generally do not improve the durability of concrete.

   • True
   • False

   Hint

   Think about how materials work together.

5. 5.

   Given a project requiring concrete with high durability, how would you choose the cement type and what supplementary materials would you add?

   Hint

   Consider the environment where the concrete will be used.

6. 6.

   Propose a mix design using both OPC and a supplementary material while achieving a target compressive strength of 80 MPa.

   Hint

   Think about how ratios impact the final mix's strength.