Practice Admixtures And Their Role In Fresh Concrete (10)

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6 sample questions

Question 1.
What is an admixture in concrete?
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Think about the purpose of enhancing concrete.
Question 2.
Name one type of admixture that increases workability.
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This type does not increase water in the mix.
3Question 3.
What is the primary role of plasticizers in concrete?
- Increase water content
- Improve workability
- Speed up setting
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Remember their specific function in mixes.
4Question 4.
True or False: Air-entraining agents are used to reduce shrinkage in a concrete mix.
- True
- False
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Consider their main purpose.
Question 5.
Compare and contrast the use of accelerators versus retarders in two different construction scenarios.
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Think about weather conditions and their impacts on concrete.
Question 6.
Evaluate the potential risks involved in using too much of any admixture in concrete mixtures and suggest mitigation measures.
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Consider observing balance and adhering to specifications.

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