Practice Selection of Water-Cement Ratio - 5 | 19. Objectives of Mix Design | Civil Engineering Materials, Testing & Evaluation - Vol 2
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Knowledge

5 - Selection of Water-Cement Ratio

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the effect of a high water-cement ratio on concrete?

💡 Hint: Think about how water affects solidity.

Question 2

Easy

Name one guideline to determine the water-cement ratio.

💡 Hint: Consider the standards governing concrete design.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary influence of the water-cement ratio on concrete?

  • Durability
  • Aesthetic
  • Compressive Strength
  • Color

💡 Hint: Look for the factor that combines how robust the concrete is.

Question 2

True or False: A lower water-cement ratio generally results in higher strength.

  • True
  • False

💡 Hint: Think about the relationship between water and solidity.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a scenario where the required compressive strength of concrete is 30 MPa. The durability requirement suggests a maximum w/c ratio of 0.45. You start trials at 0.50, adjusting down for workability. Describe your findings.

💡 Hint: What trends do you notice as you lower the water content?

Question 2

You are designing a mix for an area with harsh weather. The requirements state a w/c ratio of 0.40 is needed. However, your initial trials at 0.45 provide a workable mix that barely meets criteria. What steps would you take?

💡 Hint: How do additives influence your mix?

Challenge and get performance evaluation