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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What effect does silica fume have on water demand in concrete?
💡 Hint: Think about the surface area of silica fume.
Question 2
Easy
What does fly ash do to the setting time of concrete?
💡 Hint: Consider how the mixture behaves over time.
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 is one effect of silica fume on concrete?
- Increases setting time
- Increases water demand
- Reduces strength
💡 Hint: Consider the properties of silica fume.
Question 2
True or False: Fly ash can help with the short-term setting of concrete.
- True
- False
💡 Hint: Think about delays caused by certain materials.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If you are formulating a concrete mix for a construction project in a cold climate using fly ash, what strategies would you recommend to mitigate the extended setting times?
💡 Hint: Think about how temperature and accelerators interact with setting times.
Question 2
Compare a scenario where you use metakaolin versus a mix with only silica fume. Discuss the impacts on workability and how you would adjust your admixture choices.
💡 Hint: Reflect on how each affects viscosity.
Challenge and get performance evaluation