4. Corrosion of Reinforcing Steel

Try these first

1. 1.

   Define corrosion in the context of concrete structures.

   Hint

   Think about how the material reacts upon exposure.

2. 2.

   What does the passive layer protect the steel from?

   Hint

   Consider what happens when this layer is compromised.

3. 3.

   What type of corrosion leads to localized damage on steel reinforcement?

   • Uniform corrosion
   • Pitting corrosion
   • Crevice corrosion

   Hint

   Think about where damage occurs.

4. 4.

   True or False: Carbonation increases the pH of concrete.

   • True
   • False

   Hint

   Consider the impact of carbonation on alkalinity.

5. 5.

   Assess how effective proper curing can be in preventing corrosion in a coastal environment exposed to high chloride levels.

   Hint

   Focus on how curing affects concrete properties.

6. 6.

   Evaluate the impact of using epoxy-coated rebars in a structure exposed to saline conditions.

   Hint

   What protective properties do epoxy coatings provide?