Practice Tests for Mineral Admixtures - 8.2 | 5. Chemical and Mineral Admixtures | Concrete Technology
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8.2 - Tests for Mineral Admixtures

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the purpose of the Pozzolanic Activity Index (PAI)?

💡 Hint: Remember what PAI assesses in concrete performance.

Question 2

Easy

How is fineness measured in mineral admixtures?

💡 Hint: Think about common methods of evaluating particle size.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the Pozzolanic Activity Index measure?

  • Reactivity with water
  • Reactivity with calcium hydroxide
  • Particle size

💡 Hint: Focus on what property the PAI is assessing.

Question 2

True or False: Higher fineness in mineral admixtures improves their reactivity.

  • True
  • False

💡 Hint: Remember the relationship between size and surface area.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A particular mineral admixture exhibits a PAI of 0.75. How does this affect your decision to use it in concrete, especially for a highly reactive environment?

💡 Hint: Think about what PAI indicates regarding performance.

Question 2

You have two mineral admixtures, one with high fineness but low specific surface area due to compacting, and another with low fineness but high specific surface area. Which would you choose for high-performance concrete and why?

💡 Hint: Connect the relationship between fineness and specific surface area to reactivity.

Challenge and get performance evaluation