Practice Cold Climate Exposure (11.9.3) - Durability of Concrete - Concrete Technology

Practice: Cold Climate Exposure

Lesson 11.9.3Durability of Concrete

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9 questions

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6 sample questions

Question 1.
What is freeze-thaw damage?
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Think about what happens to water when it freezes.
Question 2.
Name an agent that can be added to concrete to improve its durability in cold climates.
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This agent creates bubbles in the concrete.
3Question 3.
What causes freeze-thaw damage in concrete?
- Water expansion
- High temperatures
- Poor mixing
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Think about what happens when water freezes.
4Question 4.
The use of air-entraining agents in concrete primarily helps to:
- True
- False
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Remember how air helps with expansion.
Question 5.
A bridge constructed in a cold climate experienced severe freeze-thaw damage. Outline a plan to redesign the concrete mix to prevent future damage.
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Consider each component's role in moisture control and freeze resistance.
Question 6.
Evaluate a concrete structure that has exhibited spalling due to freeze-thaw cycles. What diagnostic tests would you conduct to assess its condition, and what remedies could be implemented?
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Think about the properties you need to measure to remedy the current issues.

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