Practice Testing Of Aggregates (3.5) - Aggregates for Concrete

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6 sample questions

Question 1.
What does sieve analysis measure?
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Think about how we separate different sizes.
Question 2.
Why is specific gravity important in concrete?
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What does density impact?
3Question 3.
What does the sieve analysis help to determine?
- Water absorption
- Particle size distribution
- Aggregates' color
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Think about how we sort materials based on size.
4Question 4.
True or False: A high aggregate crushing value is preferable for high-quality concrete.
- True
- False
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Higher values generally suggest weaker material.
Question 5.
Design a concrete mix for a highway that needs aggregates with a crushing value of less than 25%. Describe the testing methods you would employ to ensure quality.
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Consider the types of tests previously discussed.
Question 6.
An engineer discovers that the aggregates used in a concrete mix exhibit high alkali reactivity. Suggest mitigation strategies and explain their importance.
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Review the alkali-aggregate reactivity section for strategies.

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