Practice Control of Long-Term Variability - 11 | 20. Acceptability Criteria in Concrete Mix Design | Civil Engineering Materials, Testing & Evaluation - Vol 2
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11 - Control of Long-Term Variability

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does COV stand for in concrete monitoring?

💡 Hint: A ratio that indicates variability.

Question 2

Easy

Why is it important to track long-term variability?

💡 Hint: Think about a bridge that lasts many years.

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 coefficient of variation (COV) measure?

  • Strength of concrete
  • Relative variability
  • Temperature effects

💡 Hint: Think about what tells you how stable your measurements are.

Question 2

True or False: Long-term variability in concrete performance should be ignored if initial tests show acceptable results.

  • True
  • False

💡 Hint: Consider how time might affect concrete's properties.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a set of monthly concrete strength results over six months, analyze the data and discuss any issues you identify regarding long-term performance variability.

💡 Hint: Look for upward or downward trends in the data.

Question 2

If a concrete mix is consistently underperforming in strength tests, detail the steps you would take to investigate the root causes.

💡 Hint: Consider all aspects of the mix, including resources and production methods.

Challenge and get performance evaluation