Practice Mixing (4.2) - Lightweight Concrete (LWC) - Civil Engineering Materials, Testing & Evaluation

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9 questions

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3 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 Ready-Mix Concrete?
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Focus on where and how it's made.
Question 2.
Name one advantage of uniform mixing.
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Think about quality assurance.
3Question 3.
What is the primary purpose of uniform mixing in Ready-Mix Concrete?
- To increase production speed
- To enhance concrete strength
- To reduce cost
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Think about the overall quality of the final product.
4Question 4.
True or False: High-shear mixers are typically used to produce RMC.
- True
- False
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Recall the types of mixers discussed in class.
Question 5.
Given a concrete with a mix ratio of 1:2:4 (cement:sand:aggregate), calculate the weight of aggregates needed if you are using 100 kg of cement.
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Use the concept of ratios to scale up.
Question 6.
A batching plant is mixing concrete, but the water-cement ratio is 0.6. If 50 kg of cement is used, how much water is required?
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Think of how proportions play a vital role in the mixing process.

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