Practice Mechanisms Of Durability Loss (11.4)

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6 sample questions

Question 1.
What occurs during carbonation in concrete?
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Think about what CO₂ can do chemically.
Question 2.
What does chloride ingress lead to?
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What happens when metal rusts?
3Question 3.
What is carbonation in concrete?
- A chemical attack
- A physical process
- A thermal reaction
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Remember the interaction with CO₂.
4Question 4.
True or False: Chloride ingress is helpful for concrete.
- True
- False
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Consider what happens when chloride meets steel.
Question 5.
Evaluate a hypothetical concrete structure exposed to marine conditions. Predict how carbonation and chloride ingress will affect its durability over a 10-year period.
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Consider both processes and think about their compounding effects.
Question 6.
Design a concrete mix that minimizes the effects of sulfate attack. Outline the specific components to use and the rationale behind your choices.
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What materials offer resistance against aggressive ions?

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