7.3.1. Target Performance Specification

Try these first

1. 1.

   What is the typical compressive strength required for HPC?

   Hint

   Consider the strength criteria for structural elements.

2. 2.

   Why is slump important for concrete?

   Hint

   Think about how the concrete will be mixed and placed.

3. 3.

   What is the typical compressive strength range for High Performance Concrete?

   • 20-40 MPa
   • 40-60 MPa
   • 60-100 MPa

   Hint

   Consider the advanced properties of HPC compared to normal concrete.

4. 4.

   True or False: The slump of concrete impacts its setting time.

   • True
   • False

   Hint

   Think about how easier placement might change initial hardening times.

5. 5.

   Consider a situation where the compressive strength for a bridge is set below 60 MPa. Discuss potential consequences.

   Hint

   Think about the stresses a bridge must endure.

6. 6.

   If the slump of concrete is too high, how could this lead to problems during setting?

   Hint

   Consider how too much water affects concrete cohesion.