16.2. High Strength Concrete (HSC)

Try these first

1. 1.

   What is the minimum compressive strength for HSC?

   Hint

   Think of the grade that defines high strength.

2. 2.

   List two benefits of using admixtures in HSC.

   Hint

   Consider what you want to improve in concrete mixes.

3. 3.

   What is HSC primarily known for?

   • Lightweight
   • High compressive strength
   • Low durability

   Hint

   Focus on what 'high strength' means in concrete.

4. 4.

   True or False: Admixtures can have a negative impact on workability.

   • True
   • False

   Hint

   Recall the different types of admixtures and their correct application.

5. 5.

   Given a scenario where a high-rise building needs a foundation made with HSC, describe the steps and considerations in designing the mix.

   Hint

   Consider site conditions and expected loads in your considerations.

6. 6.

   What adjustments would you recommend if trial mixes show low workability even after using superplasticizers?

   Hint

   Look at how the materials interact under temperature and moisture.