7.2. Case Study 2: Carbonation in High-Rise Residential Building

Try these first

1. 1.

   What is carbonation in concrete?

   Hint

   It involves a specific gas from the atmosphere.

2. 2.

   What color indicates uncarbonated concrete in the phenolphthalein test?

   Hint

   Think about the indicator and what it shows.

3. 3.

   What is the primary effect of carbonation on concrete?

   • Increasing its strength
   • Lowering its pH
   • Adding moisture

   Hint

   What happens when CO₂ reacts with concrete elements?

4. 4.

   True or False: The presence of a pink color in the phenolphthalein test indicates areas of carbonation in concrete.

   • True
   • False

   Hint

   Think about how the indicator works.

5. 5.

   Evaluate the consequences of failing to monitor carbonation in a dense urban environment and propose preventive strategies.

   Hint

   Focus on both inspection frequency and material solutions.

6. 6.

   Design a comprehensive plan to mitigate carbonation risk in high-rise buildings considering environmental conditions.

   Hint

   Consider all stages of construction and maintenance.