Practice Specific Gravity And Water Absorption (7.2.6) - Properties and Testing of Aggregates

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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.
Define specific gravity in your own words.
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Think about how it relates to water.
Question 2.
What is an acceptable value for water absorption?
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Remember the limit we discussed in class.
3Question 3.
What does specific gravity measure?
- Density of an aggregate
- Weight of an aggregate
- Volume of an aggregate
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Think about what density compares to.
4Question 4.
True or False: Water absorption can affect bitumen adhesion.
- True
- False
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Relate this to moisture effects in asphalt.
Question 5.
You have two aggregates, Aggregate A (SG 2.8, WA 1.5%) and Aggregate B (SG 2.4, WA 2.5%). Which would be preferable for a high-strength concrete mix? Justify your decision.
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Compare the attributes of both aggregates.
Question 6.
A contractor wants to use an aggregate with water absorption above the acceptable limit for a surface layer in asphalt. Discuss the potential risks.
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Think about long-term effects on pavement durability.

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