Practice Toughness (7.2.3) - Properties and Testing of Aggregates - Pavement Materials

Practice: Toughness

Lesson 7.2.3Properties and Testing of Aggregates

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9 questions

Flashcard drill
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
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define toughness in the context of aggregates.
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Think about how materials withstand sudden forces.
Question 2.
What does a suitable Aggregate Impact Value indicate for surface courses?
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Relate it to the performance of pavements.
3Question 3.
What is toughness in aggregates?
- Resistance to abrasion
- Resistance to impact
- Resistance to chemical attack
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Think about what affects pavement performance the most.
4Question 4.
True or False: A lower Aggregate Impact Value is better for surface courses.
- True
- False
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Consider the relation of the value to pavement longevity.
Question 5.
You are tasked with selecting aggregates for a new highway. The project demands high durability due to heavy traffic. How would you evaluate the toughness of the aggregates you're considering?
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Consider combining tests to validate your aggregate choice.
Question 6.
Discuss the long-term implications for a pavement built with aggregates that have an unacceptably high Aggregate Impact Value. What kind of maintenance might be required?
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Relate your answer to economic factors in construction.

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