1.3. Durability

Try these first

1. 1.

   What is the definition of durability in concrete?

   Hint

   Think about how long the concrete lasts without needing repairs.

2. 2.

   Why is the minimum cement content important?

   Hint

   Consider what materials contribute to strength in concrete.

3. 3.

   What is the acceptable maximum water-cement ratio for marine environments?

   • 0.60
   • 0.45
   • 0.50

   Hint

   Recall our discussion on seawater exposure.

4. 4.

   True or False: Higher cement content always leads to reduced durability of concrete.

   • True
   • False

   Hint

   Consider the role of cement in strength.

5. 5.

   Calculate an appropriate water-cement ratio for a concrete structure that will be exposed to marine conditions. Discuss how it influences overall durability.

   Hint

   Consider the effects of water on concrete integrity over time.

6. 6.

   Propose a mix design for a parking garage in an urban area where exposure to de-icing salts is common. Evaluate the critical factors for durability in your design.

   Hint

   What precautions should be taken in urban environments to handle exposure to salts?