1. Introduction to Durability and Permeability

Try these first

1. 1.

   Define durability in your own words.

   Hint

   Think about how long something lasts.

2. 2.

   What does permeability refer to in concrete?

   Hint

   Consider water flow through material.

3. 3.

   What defines the term 'Durability' in construction?

   • Ability to remain intact
   • Resistance to environmental effects
   • Long-lasting material

   Hint

   Focus on how the material handles its environment over time.

4. 4.

   True or False: Low permeability is desirable for concrete.

   • True
   • False

   Hint

   Think about what happens when water can easily get in.

5. 5.

   Design a concrete mixture for a coastal application where both freeze-thaw cycles and saltwater exposure are a concern. Justify your choices.

   Hint

   Consider the combination of environmental factors that will challenge durability.

6. 6.

   Evaluate a scenario where a bridge shows signs of premature cracking due to freeze-thaw cycles. Recommend maintenance strategies.

   Hint

   Focus on both immediate and long-term protective measures.