Practice Timing And Supervision (5.3) - Segregation - Civil Engineering Materials, Testing & Evaluation

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9 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
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is slump loss?
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Think about what happens to wet concrete after some time.
Question 2.
What is the role of a supervisor in concrete placement?
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Consider who needs to oversee many workers.
3Question 3.
What time frame should concrete ideally be placed after mixing?
- 30-45 minutes
- 15-20 minutes
- 1 hour
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Think about what's necessary for fresh concrete.
4Question 4.
Supervisors should monitor what conditions during concrete placement?
- True
- False
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What keeps the concrete usable?
Question 5.
A construction site experiences an unexpected delay in transportation, causing the concrete to sit for 50 minutes before placement. Describe the potential issues that might arise and the possible corrective actions.
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Where does the time factor come in?
Question 6.
During a site visit, a supervisor discovers the ambient temperature is above 35°C. What steps should they take to maintain concrete quality?
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How does temperature play into concrete setting?

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