Practice Flaky And Elongated Aggregates (5.1.C.4) - Aggregates – Properties, Grading, Testing

Practice: Flaky and Elongated Aggregates

Lesson 5.1.C.4Aggregates – Properties, Grading, Testing

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9 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
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define flaky aggregates.
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Think about the thickness comparison.
Question 2.
What are elongated aggregates?
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Focus on the length comparison.
3Question 3.
What defines flaky aggregates?
- Thickness less than 0.6 times mean size
- Length greater than 1.8 times mean size
- Angular-shaped aggregates
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Focus on the thickness measurement.
4Question 4.
True or False: Elongated aggregates improve workability in concrete.
- True
- False
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Recall the definition and effects.
Question 5.
In a construction scenario, you are tasked with designing a concrete mix for a structural support beam. Given a sample of aggregates with a high flakiness and elongation index, discuss the potential impact on the beam’s structural integrity.
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Analyze how aggregate properties affect concrete performance.
Question 6.
Evaluate a case where a ready-mix concrete supplier has received complaints about cracks forming in concrete structures. The aggregates used were, upon testing, found to be high in flaky and elongated particles. Propose a method for remedying this issue in future mixes.
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Consider how preventive measures can improve quality.

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