Practice Guidelines (6.1) - Workability of Fresh Concrete - Concrete Technology

Practice: Guidelines

Lesson 6.1Workability of Fresh Concrete

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8 questions

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6 sample questions

Question 1.
What is a cold joint?
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Think about what happens when new and old concrete meet.
Question 2.
Why is proper compaction important?
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Consider what might happen if air pockets were left in concrete.
3Question 3.
What is one of the main guidelines for placing concrete?
- Place as far from final position as possible
- Place in horizontal layers
- Let it sit without compaction
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Remember the recommended dimensions for the layers.
4Question 4.
True or False: Cold joints occur when new concrete is placed without following proper guidelines.
- True
- False
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Think about how stopping and starting the pour affects concrete.
Question 5.
A construction team placed concrete with significant delays due to sudden rain. What are the implications of this decision for the strength of the concrete structure?
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Consider how time and moisture affect concrete's ability to cure.
Question 6.
During a project, a worker dropped concrete from a height of 4 meters into formwork. Analyze the possible effects of this act on the final concrete strength.
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Reflect on how the impact changes the mixture.

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