Practice Deterioration Mechanisms In Cement-based Materials (4.5) - Cement – Chemical Composition, Hydration, and Physical Tests

Practice: Deterioration Mechanisms in Cement-Based Materials

Lesson 4.5Cement – Chemical Composition, Hydration, and Physical Tests

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10 questions

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4 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
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is sulfate attack?
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Think about what happens to concrete when it interacts with sulfates.
Question 2.
Name one preventive measure for AAR.
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What type of aggregates might be combined with this?
3Question 3.
What is a major consequence of sulfate attack?
- Reduction in strength
- Expansion and cracking
- Improved durability
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Think about what happens to concrete when it swells.
4Question 4.
Is carbonation harmful to steel reinforcement in concrete?
- True
- False
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Recall the chemical changes that impact the steel.
Question 5.
Analyze a case where an old bridge is experiencing severe cracking. Discuss the potential deterioration mechanisms affecting it and recommend a course of action.
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Consider the environmental exposure of the bridge as a major factor.
Question 6.
Evaluate the long-term risks of using high-alkali cement in areas prone to high-reactive aggregates and suggest an alternative material choice.
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Reflect on how cement composition directly affects its response to the aggregates used.

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