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4 cards from this section. Quick, good the night before a test.
What is the primary goal of mix design?
Think about what characteristics we need from concrete.
Why is workability important?
Consider how concrete is applied in construction.
What is the primary objective of mix design?
Think about what properties we need from concrete.
True or False: The water-cement ratio determines the concrete's workability.
Consider how changing water content affects mixing.
A project requires concrete with a compressive strength of 40 MPa. If the characteristic strength is 30 MPa with a risk factor of 1.65 and standard deviation of 5, what is the target mean strength needed?
Use the target mean strength formula!
Describe how you might adjust your mix design if your initial concrete showed low workability.
Think about the materials you can modify.
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