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4 cards from this section. Quick, good the night before a test.
What is the first step in adjusting moisture content on site?
Think about what we need to know before mixing.
What can you add to improve workability if a mix is too stiff?
Consider admixtures that improve flow.
What might happen if moisture content is not adjusted on site?
Think about the relationship between water and concrete strength.
True or False: Adding water to improve workability always improves the concrete quality.
Review the effects of excessive water.
A construction site reports unexpectedly wet aggregates. How would you adjust the mix to maintain concrete quality?
Use measurements of moisture to determine the adjustments needed.
During a project, you find out the batching equipment is off by 10%. How does this affect your concrete, and what corrective actions should you take?
Think about the role of accurate measurements in mix design.
5 more questions in this section. Enroll free to practise them all.
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