Practice Water-cement Ratio (3.2) - Definition of Durability

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6 sample questions

Question 1.
What does the water-cement ratio affect?
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Think about the functions of concrete.
Question 2.
What is an ideal w/c ratio for severe exposure conditions?
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Consider environmental conditions.
3Question 3.
What is the recommended maximum water-cement ratio for durable concrete in severe exposure?
- 0.40
- 0.45
- 0.50
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Think about environmental conditions.
4Question 4.
True or False: A higher water-cement ratio leads to stronger concrete.
- True
- False
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Consider the relationship between water and cement.
Question 5.
A contractor insists on using a w/c ratio of 0.60 for a marine structure purely for workability. What are the potential long-term implications of this choice, and how could you argue for a lower ratio?
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Consider the life span of marine structures.
Question 6.
Given a concrete strength requirement of 35 MPa, propose a water-cement ratio based on typical structural guidelines. Explain your reasoning.
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Reflect on typical exposure conditions and structural requirements.

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