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2 cards from this section. Quick, good the night before a test.
What does 'fck' represent in concrete mix design?
Think about the strength point where only a small percentage of samples fall below.
Define workability.
Consider how well concrete can flow and fill forms.
What is considered the minimum individual strength for acceptance of concrete mixes?
Remember, it’s the limit set for individual tests.
True or False: Durability is solely determined by compressive strength.
Think about what else contributes to durability.
Given a scenario where you've tested seven concrete samples yielding results of: 26, 24, 25, 21, 20, 23, and 22 MPa, calculate whether you can approve this mix for use.
Assess average strength and individual results!
If you decrease the water-cement ratio from 0.50 to 0.42 to enhance durability, what factors should you monitor?
Think about how cement interacts with water and aggregates.
4 more questions in this section. Enroll free to practise them all.
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