Practice Cement Content - 3.7 | 19. Objectives of Mix Design | Civil Engineering Materials, Testing & Evaluation - Vol 2
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3.7 - Cement Content

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for calculating target mean strength?

💡 Hint: Think about the adjustment for material variability.

Question 2

Easy

Explain the significance of the water-cement ratio.

💡 Hint: Remember, more water may increase workability but can decrease strength.

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 does the water-cement ratio primarily influence?

  • Strength
  • Durability
  • Workability

💡 Hint: Think about how water impacts concrete properties.

Question 2

True or False: The higher the water-cement ratio, the stronger the concrete.

  • True
  • False

💡 Hint: Consider the effects of excessive water.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A contractor is tasked with a concrete mix for a highway requiring a strength of M35. Given a standard deviation of 3.5 MPa, calculate the target mean strength. If the recommended water-cement ratio is 0.40, estimate the water content required for 450 kg of cement.

💡 Hint: Apply the target mean strength formula to find the desired strength.

Question 2

In a trial mix for M25 concrete, you observed a slump of only 60 mm. The desired slump is 100 mm. Propose adjustments to increase workability while maintaining strength.

💡 Hint: Adjustments should focus on improving the slump without exceeding target w/c ratios.

Challenge and get performance evaluation