Practice Alkali-aggregate Reaction (aar) (4.5.2) - Cement – Chemical Composition, Hydration, and Physical Tests

Practice: Alkali-Aggregate Reaction (AAR)

Lesson 4.5.2Cement – Chemical Composition, Hydration, and Physical Tests

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8 questions

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2 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 does AAR stand for?
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Think about the components involved in cement.
Question 2.
Name one type of silica that can react in AAR.
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Consider what is commonly found in aggregates.
3Question 3.
What does AAR stand for?
- Aggregate-Activation Reaction
- Alkali-Aggregate Reaction
- Alkaline-Activated Reaction
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Consider the chemistry involved in cement.
4Question 4.
True or False: AAR only occurs in high-temperature environments.
- True
- False
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Think about where moisture can be found.
Question 5.
A construction project is underway using high-alkali cements and aggregates that have not been tested for reactivity. Discuss the potential long-term consequences.
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Think about the damage AAR could cause over decades.
Question 6.
Quantify the economic impact of using low-alkali cement versus traditional cement in a large construction project where AAR is a concern.
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Consider both upfront and long-term costs.

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