11 - Use of Admixtures in Fresh Concrete
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Practice Questions
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What is an admixture?
💡 Hint: Think about what we change in the concrete.
Name one type of admixture that improves workability.
💡 Hint: It has 'plastic' in its name.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of a plasticizer?
💡 Hint: Think of what plasticizers do.
True or False: Retarders are used to speed up the setting of concrete.
💡 Hint: Consider if they make setting faster or slower.
1 more question available
Challenge Problems
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You are advising a contractor on a concrete mix for a large outdoor project in a hot climate. What admixtures would you recommend? Justify your choices.
💡 Hint: Consider the impacts of heat on setting and how admixtures can counteract that.
A construction project is facing delays due to cold weather. What specific admixture could aid in accelerating concrete strength and why is it important?
💡 Hint: Think about why quick setting could benefit a construction timeline during winter.
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