Practice Low Water-cement Ratio (11.6.1) - Durability of Concrete - Concrete Technology

Practice: Low Water-Cement Ratio

Lesson 11.6.1Durability of Concrete

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8 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
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does a low water-cement ratio improve in concrete?
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Think about the characteristics of dense concrete.
Question 2.
What is the recommended w/c ratio for aggressive environments?
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Remember the specific threshold mentioned.
3Question 3.
What is the recommended water-cement ratio for harsh environments?
- <0.30
- <0.45
- <0.50
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Look for the specific recommendation in the section.
4Question 4.
True or False: A low water-cement ratio reduces the density of concrete.
- True
- False
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Think about the impact of density on durability.
Question 5.
Evaluate the effects of increasing the w/c ratio from 0.40 to 0.55 on a concrete structure located in a marine environment. What recommendations would you provide to mitigate potential issues?
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Think about the effects of permeability on durability.
Question 6.
Propose a concrete mix design for a building situated in an area with high sulfate exposure, ensuring durability and strength within a 0.45 w/c ratio. Justify your material choices.
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Consider how each material contributes to strength and resistance.

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