18.2.3 - Aggregate Properties
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Practice Questions
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What is the primary reason for having well-graded aggregates?
💡 Hint: Think about what reducing voids would mean for material costs.
Why might rounded aggregates be preferred over angular ones?
💡 Hint: Consider how they fit together.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Why is grading important in concrete mix design?
💡 Hint: Think about how effective packing can change material requirements.
True or False: Angular aggregates ensure better workability than rounded aggregates.
💡 Hint: Consider how the shape affects movement and alignment.
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Challenge Problems
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A construction project specifies a maximum aggregate size of 20mm for concrete. Discuss the possible effects on workability, strength, and overall mix design.
💡 Hint: Think about how dimensions and particle interaction influence behavior in mixes.
Evaluate a scenario where overly angular aggregates are supplied instead of rounded ones. What adjustments can be made to compensate in the mix design?
💡 Hint: Consider how you can adjust water to modify the flow of a stiff mix.
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