Practice Exposure Classifications (as Per Is 456:2000) (9.2) - Durability of Construction Materials

Practice: Exposure Classifications (as per IS 456:2000)

Lesson 9.2Durability of Construction Materials

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the maximum water-cement ratio for mild exposure?
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Look in the mild exposure section.
Question 2.
How much cement is required for moderate exposure?
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Moderate exposure also has a requirement for cement content.
3Question 3.
What is the minimum cement content required for very severe exposure?
- 300 kg/m³
- 320 kg/m³
- 340 kg/m³
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Think about the increasing severity of exposure.
4Question 4.
True or False: The w/c ratio for extreme exposure is higher than that for severe exposure.
- True
- False
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Understand how the ratio corresponds to exposure types.
Question 5.
A contractor is planning a bridge in a coastal city intending to use very severe exposure classification. Determine the minimum cement content and water-cement ratio needed for durability.
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Check the requirements outlined for very severe exposure in IS 456:2000.
Question 6.
If a concrete mix fails to meet the required cement content for an extreme exposure environment, what potential issues might arise? Discuss the consequences based on the conditions specified.
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Consider how aggressive environments interact with weaker mixes.

5 more questions in this section. Enroll free to practise them all.