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3 cards from this section. Quick, good the night before a test.
What happens to water when it freezes inside concrete?
Think about the expansion of water when it turns to ice.
Why is air-entrainment beneficial for concrete?
Consider how air bubbles help in a mixed drink.
What is the main risk of freeze-thaw damage in concrete?
Think about how ice expansion affects solid structures.
True or False: Air-entrainment is detrimental to freeze-thaw resistance.
Consider what happens during ice formation.
A concrete bridge shows signs of cracking after several years in a cold climate. Discuss the possible causes and suggest preventive measures.
Reflect on the principles of concrete durability discussed.
Design a freeze-thaw resistant concrete mix for a new outdoor structure in a frost-prone area. Specify materials and methods.
Think about how each component serves to improve freeze-thaw resilience.
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