Practice Cracks And Their Role In Accelerating Permeability (11) - Durability of Construction Materials

Practice: Cracks and Their Role in Accelerating Permeability

Lesson 11Durability of Construction Materials

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8 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is meant by permeability in concrete?
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Think about how water interacts with concrete.
Question 2.
What happens to durability when cracks appear?
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Remember how roads can deteriorate with cracks.
3Question 3.
What effect do cracks larger than 0.3 mm have on concrete?
- Decrease permeability
- Increase chloride ingress
- Improve durability
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Consider how much easier it is for water to flow through a larger hole.
4Question 4.
True or False: Autogenous healing is effective for all sizes of cracks.
- True
- False
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Recall the limitations of concrete self-repair abilities.
Question 5.
You have a concrete structure with a crack measuring 0.4 mm. Explain the potential risks associated with such a crack and suggest a remedy.
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Think of how repair methods can restore integrity.
Question 6.
Describe the role of environmental conditions in the effectiveness of autogenous healing in concrete and provide examples.
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Evaluate the location of the structure in terms of humidity and temperature.

4 more questions in this section. Enroll free to practise them all.