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2 cards from this section. Quick, good the night before a test.
What does segregation mean in concrete?
Think about what happens when you see different colors or sizes in a concrete mix.
What is bleeding in fresh concrete?
Consider what happens when a drink sweats on a hot day.
What is the primary cause of segregation during concrete pumping?
Think of how stirring too much can cause things to separate.
True or False: High ambient temperatures can accelerate the loss of slump in concrete.
Consider how heat affects other materials.
A construction site reports frequent segregation during pumping despite using standard practices. Propose a multi-faceted approach to identify the cause and improve the situation.
Consider every step of the process from mixing to application.
Your team is tasked with preparing a concrete mix for a bridge in a hot climate. What steps will you take to ensure the concrete maintains workability during transport?
Reflect on how temperature affects other materials.
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