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2 cards from this section. Quick, good the night before a test.
What does COV stand for in concrete monitoring?
A ratio that indicates variability.
Why is it important to track long-term variability?
Think about a bridge that lasts many years.
What does the coefficient of variation (COV) measure?
Think about what tells you how stable your measurements are.
True or False: Long-term variability in concrete performance should be ignored if initial tests show acceptable results.
Consider how time might affect concrete's properties.
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.
Look for upward or downward trends in the data.
If a concrete mix is consistently underperforming in strength tests, detail the steps you would take to investigate the root causes.
Consider all aspects of the mix, including resources and production methods.
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