Practice Factors Influencing Freeze-thaw Durability (2.2) - Introduction to Durability and Permeability

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10 questions

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6 sample questions

Question 1.
What does the saturation level of concrete refer to?
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Think about how much water concrete can hold.
Question 2.
How does air-entrainment benefit concrete?
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Remember the role of air bubbles.
3Question 3.
What happens to water in concrete when it freezes?
- It contracts
- It expands
- It evaporates
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Think about how ice forms.
4Question 4.
True or False: Proper curing can reduce permeability.
- True
- False
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Consider the importance of moisture in concrete.
Question 5.
A city plans to build a new bridge in a cold region. Describe how you would recommend designing the concrete for optimal freeze-thaw resistance.
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Consider all factors discussed to enhance durability.
Question 6.
Analyze the consequences of using non-air-entrained concrete in a project exposed to freeze-thaw cycles.
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Think about how water expands when frozen.

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