Practice Properties (6.2.3) - Mineral Admixtures

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9 questions

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6 sample questions

Question 1.
What is a mineral admixture?
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Think about materials that improve concrete.
Question 2.
Name two types of pozzolanic admixtures.
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Consider by-products from industrial processes.
3Question 3.
What is the main function of mineral admixtures in concrete?
- Enhance performance
- Reduce cost
- Accelerate setting time
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Think about how these additions affect concrete properties.
4Question 4.
Silica fume is known for which property?
- True
- False
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Recall its role in improving strength.
Question 5.
Evaluate the trade-offs when using silica fume in concrete mixtures with respect to workability and strength.
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Think about how reactivity and particle size influence concrete mix.
Question 6.
Formulate a mix design incorporating 25% fly ash and discuss its expected impact on hydration and strength development.
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Discuss how pozzolanic reactions occur during hydration.

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