4. Mechanisms of Concrete Deterioration

Try these first

1. 1.

   What causes freeze-thaw damage in concrete?

   Hint

   Think about the physical property of water.

2. 2.

   Name one effect of sulfate attack on concrete.

   Hint

   Consider how the chemical reaction alters the volume.

3. 3.

   What primarily causes physical deterioration?

   • Chemical reactions
   • Mechanical forces
   • Thermal expansion

   Hint

   Think of physical examples.

4. 4.

   True or False: Carbonation increases the pH of concrete.

   • True
   • False

   Hint

   Focus on what carbonation does to concrete.

5. 5.

   A bridge built in a coastal area has begun to show signs of cracking and failure. Analyze the potential deterioration mechanisms and suggest a preventative design strategy.

   Hint

   Consider environmental factors influencing concrete.

6. 6.

   Evaluate the long-term effects of neglecting to address alkali-silica reactions in a concrete structure. Suggest comprehensive methods to monitor and mitigate this issue.

   Hint

   Think about both immediate and long-term impacts.