11.3.3. Corrosion of Steel Reinforcement

Try these first

1. 1.

   Define corrosion in the context of concrete structures.

   Hint

   Think about how metals react to their environment.

2. 2.

   What are the two primary mechanisms of corrosion discussed?

   Hint

   Recall the agents that attack the protective layer of steel.

3. 3.

   What is a primary consequence of steel corrosion in concrete?

   • Improved strength
   • Cracking and delamination
   • Increased durability

   Hint

   Think about how rust takes more space than steel.

4. 4.

   True or False: Carbonation raises the pH of concrete, making it more alkaline.

   • True
   • False

   Hint

   Consider how CO2 influences the chemical makeup of concrete.

5. 5.

   Analyze a scenario where a bridge experiences severe corrosion in its steel reinforcements. What tests would you apply to evaluate the damage?

   Hint

   Consider both destructive and non-destructive testing methods.

6. 6.

   Evaluate the long-term implications of using high-permeability concrete in coastal areas.

   Hint

   Connect permeability to moisture ingress and its relation to corrosion.