Practice Retarding Admixtures (4.1.2) - Chemical Admixtures - Concrete Technology

Practice: Retarding Admixtures

Lesson 4.1.2Chemical Admixtures

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8 questions

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3 cards from this section. Quick, good the night before a test.
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6 sample questions

Question 1.
What is the primary purpose of retarding admixtures?
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Think about why you might need more time to work with concrete.
Question 2.
Name one common retarding admixture.
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Remember I mentioned common examples.
3Question 3.
What is the main function of retarding admixtures?
- Speed up setting time
- Delay setting time
- No effect on setting time
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Think about why you might need more time before concrete hardens.
4Question 4.
True or False: Sugar can be used as a retarding admixture.
- True
- False
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Recall our discussion about common retarding substances.
Question 5.
You are tasked with pouring concrete in a particularly hot climate. You want to avoid cold joints and ensure the quality of the concrete. What considerations and admixtures would you choose?
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Think about the environmental conditions and their effects on setting time.
Question 6.
A contractor used too much of a retarding admixture in a mix. What steps could you take to rectify the situation before the concrete sets?
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What options do you have to address curing and hydration delays?

4 more questions in this section. Enroll free to practise them all.