Practice Basic Guidelines (3.1) - Mixing of Concrete - Civil Engineering Materials, Testing & Evaluation

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10 questions

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3 cards from this section. Quick, good the night before a test.
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6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the maximum drop height for placing concrete?
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Think about how height affects the mixture.
Question 2.
Why is it important to place concrete close to its final position?
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Consider what happens if concrete is moved too much.
3Question 3.
What is the recommended maximum drop height when placing concrete?
- 1 meter
- 1.5 meters
- 2 meters
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Remember the guidelines for dropping heights.
4Question 4.
True or False: Concrete should be placed within 30 minutes of mixing.
- True
- False
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Think about the time-sensitive nature of concrete.
Question 5.
You are at a site where you accidentally dropped concrete from 2 meters. Predict what issues may arise and how you can mitigate them in future placements.
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Think about the physical characteristics of concrete when dropped.
Question 6.
If you have 45 minutes to pour a large footing, how can you ensure you are within the recommended timing for placement?
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Plan your workforce and strategy carefully to minimize delays.

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