Practice Symptoms And Effects (5.4) - Durability of Concrete - Civil Engineering Materials, Testing & Evaluation

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9 questions

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

Question 1.
What does AAR stand for?
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Think about the chemical reaction involving aggregates.
Question 2.
Name a symptom of AAR.
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This symptom often looks like a puzzle on the concrete surface.
3Question 3.
What is the primary cause of map cracking?
- A) High temperatures
- B) Alkali-silica reaction
- C) Insufficient curing
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Recall the chemical process we discussed.
4Question 4.
True or False: Efflorescence is a sign of AAR.
- True
- False
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Think about moisture's role in both efflorescence and AAR.
Question 5.
Analyze a situation in a coastal bridge that started showing efflorescence and map cracking within a few years. What might be the underlying causes, and what steps should be taken?
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Consider environmental impacts and material choices.
Question 6.
Propose a research study to assess the effectiveness of various pozzolanic materials in reducing AAR in concrete. Outline the methodology you would use.
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Think about experimental designs and control measures.

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