4.4 - Selection of Admixtures – Practical Considerations
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Practice Questions
Test your understanding with targeted questions
What is an admixture in concrete?
💡 Hint: Think about what can change how concrete behaves.
Name one function of superplasticizers.
💡 Hint: How can we make concrete easier to work with?
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which admixture is used to accelerate the setting time of concrete?
💡 Hint: Think about the word 'speed' in terms of setting time.
True or False: Air-entraining agents are used to enhance the workability of concrete.
💡 Hint: What is the primary function of air-entraining agents?
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Challenge Problems
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A large concrete pour is scheduled for a bridge deck on a hot day. Discuss how you would choose admixtures to ensure quality.
💡 Hint: Think about how weather affects concrete behavior.
Explain how using superplasticizers can impact the durability of a high-rise structure's concrete.
💡 Hint: Consider how water content affects strength.
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