Practice Mix Design Considerations (2.5) - Lightweight Concrete (LWC) - Civil Engineering Materials, Testing & Evaluation

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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.
What is aggregate packing density?
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Think about how tightly the pieces fit together.
Question 2.
What role do micro-fillers play in concrete?
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Consider what happens when small particles fill gaps.
3Question 3.
What is the purpose of micro-fillers in concrete mix design?
- To lower costs
- To improve packing
- To increase weight
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Think about density and strength.
4Question 4.
True or False: Trial mixes help optimize the concrete mix before large-scale production.
- True
- False
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Consider why you would test before doing it for real!
Question 5.
You are tasked with designing a concrete mix that requires a compressive strength of at least 80 MPa. Describe the steps you would take, including materials and process.
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Consider both material properties and their interactions.
Question 6.
Analyze how varying the aggregate packing density could affect the final strength of a lightweight concrete mix.
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Think of how closely materials need to sit together.

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