Practice Mechanism Of Action (4.2) - Chemical Admixtures

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6 sample questions

Question 1.
What is the purpose of water reducers in concrete?
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Think of how it helps with mixing.
Question 2.
Name two types of accelerating admixtures.
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One is typically avoided in reinforced concrete.
3Question 3.
What is the main advantage of using water reducers in concrete?
- Decrease water satisfaction
- Improve compressive strength
- Reduce water demand
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Remember how it affects the mix.
4Question 4.
True or False: Accelerators do not affect the strength gain of concrete.
- True
- False
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Think about what accelerators do.
Question 5.
Given that a concreting project in a hot climate requires a longer setting time, how would you justify the use of retarding admixtures?
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Consider the temperature's effect on setting time.
Question 6.
In a specific project, excessive use of a superplasticizer leads to reduced strength in concrete. Analyze this situation.
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Think about too much of a good thing impacting results.

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