Practice Viscosity-modifying Admixtures (vmas) (7.4) - Segregation - Civil Engineering Materials, Testing & Evaluation

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9 questions

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6 sample questions

Question 1.
What does VMA stand for?
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Think about viscosity in concrete.
Question 2.
Name one benefit of using VMAs.
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Think about how it makes concrete easier to handle.
3Question 3.
What does a VMA improve in concrete?
- Flexibility
- Viscosity
- Color
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Focus on what VMA stands for.
4Question 4.
True or False: VMAs help reduce bleeding in concrete.
- True
- False
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Consider the actions of VMAs in preventing separation.
Question 5.
Design a concrete mix for a vertical application that requires high viscosity. What VMAs would you utilize, and why?
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Think about the characteristics of the blend and setting times.
Question 6.
Evaluate a scenario where a construction site oversupplied VMAs to the mix. What effects would you anticipate?
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Consider how increased viscosity impacts flow and application.

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