Practice Silica Fume (11.2) - Definition of Durability

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6 sample questions

Question 1.
What is silica fume?
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Think about its source in industry.
Question 2.
What does silica fume help to reduce in concrete?
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It keeps water and chemicals out.
3Question 3.
What does silica fume primarily enhance in concrete?
- Workability
- Durability
- Color
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Think about the environmental factors it protects against.
4Question 4.
True or False: Silica fume is less effective than fly ash in reducing permeability.
- True
- False
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Consider their physical properties.
Question 5.
Given a concrete mix with a w/c ratio of 0.50, how would the introduction of silica fume affect this ratio if aiming for a durable mix? Discuss the implications.
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Think about how water interacts with silica fume.
Question 6.
You are tasked with designing a concrete mix for a coastal structure. Discuss the role of silica fume and considerations in the design process.
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Recall the challenges presented by marine environments.

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