8.2 - Tests for Mineral Admixtures
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the purpose of the Pozzolanic Activity Index (PAI)?
💡 Hint: Remember what PAI assesses in concrete performance.
How is fineness measured in mineral admixtures?
💡 Hint: Think about common methods of evaluating particle size.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Pozzolanic Activity Index measure?
💡 Hint: Focus on what property the PAI is assessing.
True or False: Higher fineness in mineral admixtures improves their reactivity.
💡 Hint: Remember the relationship between size and surface area.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.