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4 cards from this section. Quick, good the night before a test.
What is fresh concrete?
Think about the state of concrete before it hardens.
Define workability in concrete.
Consider how easy it is to work with concrete materials.
What effect does increased water absorption in recycled aggregates have on workability?
Think about how hydration affects other materials.
True or False: The surface texture of recycled aggregates does not influence the amount of paste needed in concrete.
Consider how different surfaces interact with liquids.
Given a concrete mix design using 100 kg of recycled aggregates with a water absorption of 10%, how would you adjust the water content to maintain workability?
Consider how much water the aggregates would absorb and add that into your equation for the overall water needed.
Evaluate how using a higher proportion of rough recycled aggregates could affect the overall concrete performance and suggest ways to counter these effects.
Think about how to balance texture and paste in your mix design.
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