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3 cards from this section. Quick, good the night before a test.
What is silica fume used for in HPC?
Think of its role in improving concrete density.
Name one SCM that improves workability.
It's a byproduct from burning coal.
What is the recommended percentage of silica fume in HPC?
It's a small percentage but very powerful in effect.
True or False: Fly ash can only be used in low-strength concrete.
Think about its benefits across different concrete strengths.
Design a High Performance Concrete mix incorporating 10% silica fume, 20% fly ash, and 30% GGBS. Calculate the total binder content if the total weight of concrete is 800 kg.
Determine the percentages relative to the total weight.
Discuss the effects on workability and strength if silica fume is increased to 15% in an HPC mix. What adjustments might you make?
Consider how material interactions can change.
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