Practice Origin And Production (6.3.1) - Mineral Admixtures

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6 sample questions

Question 1.
What is silica fume primarily used for in concrete?
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Think about its role in the concrete mix.
Question 2.
What is the particle size of silica fume?
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Recall the significance of size in particle interactions.
3Question 3.
What is silica fume a by-product of?
- Cement production
- Silicon and Ferrosilicon alloys
- Fly ash
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Think about industries that involve electric arc furnaces.
4Question 4.
True or False: Silica fume contributes to increased permeability in concrete.
- True
- False
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Recall the benefits it provides to concrete structure.
Question 5.
A construction project uses 1000 kg of cement. If 10% silica fume is to be added, calculate the weight of silica fume required and discuss its expected benefits.
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Apply the concept of percentages to find the weight.
Question 6.
Explain how the addition of silica fume might alter the curing time of a batch of concrete compared to regular concrete.
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Consider the interaction between silica fume and water.

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