11.11. Case Studies on Concrete Durability Failures

Try these first

1. 1.

   What causes corrosion in concrete structures?

   Hint

   Think about environmental factors affecting metals.

2. 2.

   What is ASR?

   Hint

   Recall any chemical reaction that leads to cracks.

3. 3.

   What is the primary cause of corrosion in concrete structures exposed to marine environments?

   • High alkalinity
   • Moisture and chlorides
   • Low temperature

   Hint

   Consider the factors in marine environments.

4. 4.

   True or False: ASR causes extensive cracking due to the reaction of non-reactive aggregates.

   • True
   • False

   Hint

   Focus on the type of aggregates involved.

5. 5.

   Design a concrete mix for a marine environment, considering corrosion resistance. Explain your choice of materials.

   Hint

   Think about how different materials interact with the environment.

6. 6.

   Discuss the implications of failing to consider ASR in a new construction project and derive a strategy to mitigate this risk.

   Hint

   Assess the risks and preventive measures for all phases of construction.