Practice Water-Cement Ratio (W/C Ratio) - 18.2.1 | 18. Mix Design – Principles and Influencing Factors | Civil Engineering Materials, Testing & Evaluation - Vol 1
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Knowledge

18.2.1 - Water-Cement Ratio (W/C Ratio)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the water-cement ratio control in concrete?

💡 Hint: Think about the properties it affects.

Question 2

Easy

True or False: Lowering the water-cement ratio always improves workability.

💡 Hint: Remember the balance between strength and ease of use.

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 typical range for a W/C ratio in concrete design?

  • 0.10 - 0.30
  • 0.35 - 0.65
  • 0.70 - 0.90

💡 Hint: Refer to the standards set for concrete design.

Question 2

A lower water-cement ratio leads to _ strength and ___ workability.

  • higher; higher
  • lower; lower
  • higher; lower

💡 Hint: Think about the trade-offs in concrete properties.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A concrete mix has a W/C ratio of 0.50. If a contractor decides to reduce the water content to improve strength, what potential problem may arise, and how can this be mitigated during the mixing process?

💡 Hint: Consider the trade-offs between workability and strength.

Question 2

Calculate the proper amount of water needed for a mix with 300 kg of cement and a desired W/C ratio of 0.6. Explain the implications of your choice for different exposure conditions.

💡 Hint: Think about how the conditions affect the W/C ratio choices.

Challenge and get performance evaluation