Practice Mineral Admixtures (supplementary Cementitious Materials – Scms) (3)

Practice: Mineral Admixtures (Supplementary Cementitious Materials – SCMs)

Lesson 3Chemical and Mineral Admixtures

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10 questions

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5 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
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a mineral admixture?
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Think about materials that react with calcium hydroxide.
Question 2.
Name one type of mineral admixture and its source.
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Consider the processes that generate waste materials.
3Question 3.
What is the primary benefit of using mineral admixtures in concrete?
- A) Increase heat of hydration
- B) Improve long-term strength
- C) Reduce workability
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Think about how these admixtures affect concrete performance.
4Question 4.
True or False: Fly ash can help reduce the permeability of concrete.
- True
- False
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Recall the properties associated with fly ash.
Question 5.
Analyze a case study where fly ash was used in a road construction project. Discuss the advantages it brought in terms of performance and sustainability.
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Consider the lifecycle and environmental implications of using fly ash.
Question 6.
Design a small experiment to compare the performance of concrete with and without silica fume in terms of strength and permeability. Outline your methodology.
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Think about how to establish control and variability in your experiment.

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