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3 cards from this section. Quick, good the night before a test.
What does segregation refer to in the context of concrete?
Think about what happens to materials in a mix when shaken.
Why is it important to complete transportation of concrete within the initial setting time?
Consider how concrete changes as time passes after mixing.
What is one major risk of concrete segregation?
Think about how mixing affects the overall look and feel.
True or False: Moisture loss in fresh concrete is desirable.
Consider what keeping moisture maintains for the material's integrity.
A construction site is located in an area experiencing extreme heat. The team must transport concrete 30 minutes after mixing. What measures should they take to ensure the concrete maintains its quality during transportation?
Consider what factors need to be controlled in hot conditions.
During a rainy season, you are transporting concrete but accidentally left it uncovered. Discuss the potential impacts this can have on the final structural integrity and what steps could remedy some of these issues.
Think about the changes in composition due to excess water.
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