Practice Sulfate Attack (4.2.1) - Definition of Durability - Concrete Technology

Practice: Sulfate Attack

Lesson 4.2.1Definition of Durability

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8 questions

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6 sample questions

Question 1.
What happens during sulfate attack?
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Think about chemical reactions that change the structure of concrete.
Question 2.
What is ettringite?
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Recall it as a result of sulfate reacting with calcium.
3Question 3.
What is the main effect of sulfate attack on concrete?
- Increased strength
- Cracking and expansion
- No effect
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Consider what happens when sulfates react with concrete.
4Question 4.
True or False: Ettringite is beneficial for concrete.
- True
- False
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Remember what ettringite does to concrete.
Question 5.
Design a construction plan for a new highway bridge in a coastal area where sulfate levels are high. What materials and practices would you include to ensure durability against sulfate attack?
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Consider both the composition of the concrete and the environmental conditions.
Question 6.
Analyze a case study where a concrete structure suffered from sulfate attack. Identify key factors that contributed to the deterioration and propose solutions.
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Think about what went wrong and how it could be fixed in future designs.

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