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3 cards from this section. Quick, good the night before a test.
What effect does silica fume have on water demand in concrete?
Think about the surface area of silica fume.
What does fly ash do to the setting time of concrete?
Consider how the mixture behaves over time.
What is one effect of silica fume on concrete?
Consider the properties of silica fume.
True or False: Fly ash can help with the short-term setting of concrete.
Think about delays caused by certain materials.
If you are formulating a concrete mix for a construction project in a cold climate using fly ash, what strategies would you recommend to mitigate the extended setting times?
Think about how temperature and accelerators interact with setting times.
Compare a scenario where you use metakaolin versus a mix with only silica fume. Discuss the impacts on workability and how you would adjust your admixture choices.
Reflect on how each affects viscosity.
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