Practice Alkali-aggregate Reactivity Test (7.3.8) - Properties and Testing of Aggregates

Practice: Alkali-Aggregate Reactivity Test

Lesson 7.3.8Properties and Testing of Aggregates

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9 questions

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

Question 1.
What two types of reactions does the Alkali-Aggregate Reactivity Test assess?
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Think about the aggregate types that may react with alkalis.
Question 2.
What is the acceptable expansion limit in the Alkali-Aggregate Reactivity Test?
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Refer to the values stated regarding expansion.
3Question 3.
What is the primary purpose of the Alkali-Aggregate Reactivity Test?
- A) To test for concrete strength
- B) To detect potential aggregate reactivity
- C) To assess the color of the aggregate
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Think about what the test focuses on regarding aggregate properties.
4Question 4.
True or False: The acceptable expansion limit in the test is 0.2%.
- True
- False
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Refer back to the limits defined in our discussion.
Question 5.
You have three aggregates to test: one known for high reactivity, one commonly used with minimal issue, and one new type. How would you prioritize testing for potential expansion?
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Consider the risk each aggregate poses based on previous experiences.
Question 6.
If a project shows initial signs of expansion linked to alkali reactions, what steps should be taken to mitigate this risk for future constructions?
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Think about preventive measures and adjustments to sourcing strategies.

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